diff --git a/mypy/nodes.py b/mypy/nodes.py
index 377678213a5b..19f908661d49 100644
--- a/mypy/nodes.py
+++ b/mypy/nodes.py
@@ -184,15 +184,15 @@ class Node(Context):
     __slots__ = ()
 
     def __str__(self) -> str:
-        and = self.accept(mypy.strconv.StrConv(options=Options()))
-        if and is None:
+        ans = self.accept(mypy.strconv.StrConv(options=Options()))
+        if ans is None:
             return repr(self)
-        return and
+        return ans
 
     def str_with_options(self, options: Options) -> str:
-        and = self.accept(mypy.strconv.StrConv(options=options))
-        assert and
-        return and
+        ans = self.accept(mypy.strconv.StrConv(options=options))
+        assert ans
+        return ans
 
     def accept(self, visitor: NodeVisitor[T]) -> T:
         raise RuntimeError("Not implemented", type(self))
diff --git a/mypy/test/teststubgen.py b/mypy/test/teststubgen.py
index e3e20fee73d5..e65a16c8f395 100644
--- a/mypy/test/teststubgen.py
+++ b/mypy/test/teststubgen.py
@@ -587,10 +587,10 @@ def test_common_dir_prefix_unix(self) -> None:
         assert common_dir_prefix(["foo/bar/x.pyi", "foo/bar/y.pyi"]) == "foo/bar"
         assert common_dir_prefix(["foo/bar/x.pyi", "foo/y.pyi"]) == "foo"
         assert common_dir_prefix(["foo/x.pyi", "foo/bar/y.pyi"]) == "foo"
-        assert common_dir_prefix(["foo/bar/czar/x.pyi", "foo/y.pyi"]) == "foo"
-        assert common_dir_prefix(["foo/x.pyi", "foo/bar/czar/y.pyi"]) == "foo"
-        assert common_dir_prefix(["foo/bar/czar/x.pyi", "foo/bar/y.pyi"]) == "foo/bar"
-        assert common_dir_prefix(["foo/bar/x.pyi", "foo/bar/czar/y.pyi"]) == "foo/bar"
+        assert common_dir_prefix(["foo/bar/zar/x.pyi", "foo/y.pyi"]) == "foo"
+        assert common_dir_prefix(["foo/x.pyi", "foo/bar/zar/y.pyi"]) == "foo"
+        assert common_dir_prefix(["foo/bar/zar/x.pyi", "foo/bar/y.pyi"]) == "foo/bar"
+        assert common_dir_prefix(["foo/bar/x.pyi", "foo/bar/zar/y.pyi"]) == "foo/bar"
         assert common_dir_prefix([r"foo/bar\x.pyi"]) == "foo"
         assert common_dir_prefix([r"foo\bar/x.pyi"]) == r"foo\bar"
 
@@ -604,10 +604,10 @@ def test_common_dir_prefix_win(self) -> None:
         assert common_dir_prefix([r"foo\bar\x.pyi", r"foo\bar\y.pyi"]) == r"foo\bar"
         assert common_dir_prefix([r"foo\bar\x.pyi", r"foo\y.pyi"]) == "foo"
         assert common_dir_prefix([r"foo\x.pyi", r"foo\bar\y.pyi"]) == "foo"
-        assert common_dir_prefix([r"foo\bar\czar\x.pyi", r"foo\y.pyi"]) == "foo"
-        assert common_dir_prefix([r"foo\x.pyi", r"foo\bar\czar\y.pyi"]) == "foo"
-        assert common_dir_prefix([r"foo\bar\czar\x.pyi", r"foo\bar\y.pyi"]) == r"foo\bar"
-        assert common_dir_prefix([r"foo\bar\x.pyi", r"foo\bar\czar\y.pyi"]) == r"foo\bar"
+        assert common_dir_prefix([r"foo\bar\zar\x.pyi", r"foo\y.pyi"]) == "foo"
+        assert common_dir_prefix([r"foo\x.pyi", r"foo\bar\zar\y.pyi"]) == "foo"
+        assert common_dir_prefix([r"foo\bar\zar\x.pyi", r"foo\bar\y.pyi"]) == r"foo\bar"
+        assert common_dir_prefix([r"foo\bar\x.pyi", r"foo\bar\zar\y.pyi"]) == r"foo\bar"
         assert common_dir_prefix([r"foo/bar\x.pyi"]) == r"foo\bar"
         assert common_dir_prefix([r"foo\bar/x.pyi"]) == r"foo\bar"
         assert common_dir_prefix([r"foo/bar/x.pyi"]) == r"foo\bar"
diff --git a/mypy/test/testtypes.py b/mypy/test/testtypes.py
index 5dd3b78c9498..0218d33cc124 100644
--- a/mypy/test/testtypes.py
+++ b/mypy/test/testtypes.py
@@ -867,7 +867,7 @@ def test_generics_contravariant(self) -> None:
     def test_generics_with_multiple_args(self) -> None:
         self.assert_join(self.fx_co.hab, self.fx_co.hab, self.fx_co.hab)
         self.assert_join(self.fx_co.hab, self.fx_co.hbb, self.fx_co.hab)
-        self.assert_join(self.fx_co.had, self.fx_co.has, self.fx_co.hao)
+        self.assert_join(self.fx_co.had, self.fx_co.haa, self.fx_co.hao)
 
     def test_generics_with_inheritance(self) -> None:
         self.assert_join(self.fx_co.gsab, self.fx_co.gb, self.fx_co.gb)
@@ -1208,7 +1208,7 @@ def test_simple_generics(self) -> None:
 
     def test_generics_with_multiple_args(self) -> None:
         self.assert_meet(self.fx.hab, self.fx.hab, self.fx.hab)
-        self.assert_meet(self.fx.hab, self.fx.has, self.fx.hab)
+        self.assert_meet(self.fx.hab, self.fx.haa, self.fx.hab)
         self.assert_meet(self.fx.hab, self.fx.had, self.fx.nonet)
         self.assert_meet(self.fx.hab, self.fx.hbb, self.fx.hbb)
 
diff --git a/mypy/test/typefixture.py b/mypy/test/typefixture.py
index 73af11b45327..5a813f70117c 100644
--- a/mypy/test/typefixture.py
+++ b/mypy/test/typefixture.py
@@ -182,7 +182,7 @@ def make_type_var(
         self.gs2d = Instance(self.gs2i, [self.d])  # GS2[D]
 
         self.hab = Instance(self.hi, [self.a, self.b])  # H[A, B]
-        self.has = Instance(self.hi, [self.a, self.a])  # H[A, A]
+        self.haa = Instance(self.hi, [self.a, self.a])  # H[A, A]
         self.hbb = Instance(self.hi, [self.b, self.b])  # H[B, B]
         self.hts = Instance(self.hi, [self.t, self.s])  # H[T, S]
         self.had = Instance(self.hi, [self.a, self.d])  # H[A, D]
diff --git a/mypyc/ir/ops.py b/mypyc/ir/ops.py
index a1ab322a36be..896ba3ac091c 100644
--- a/mypyc/ir/ops.py
+++ b/mypyc/ir/ops.py
@@ -780,7 +780,7 @@ def accept(self, visitor: OpVisitor[T]) -> T:
         return visitor.visit_set_attr(self)
 
 
-# Default name space for statistics, variables
+# Default name space for statics, variables
 NAMESPACE_STATIC: Final = "static"
 
 # Static namespace for pointers to native type objects
@@ -796,12 +796,12 @@ def accept(self, visitor: OpVisitor[T]) -> T:
 class LoadStatic(RegisterOp):
     """Load a static name (name :: static).
 
-    Load a C static variable/pointer. The namespace for statistics is shared
+    Load a C static variable/pointer. The namespace for statics is shared
     for the entire compilation group. You can optionally provide a module
     name and a sub-namespace identifier for additional namespacing to avoid
     name conflicts. The static namespace does not overlap with other C names,
     since the final C name will get a prefix, so conflicts only must be
-    avoided with other statistics.
+    avoided with other statics.
     """
 
     error_kind = ERR_NEVER
@@ -1451,7 +1451,7 @@ class LoadAddress(RegisterOp):
       type: Type of the loaded address(e.g. ptr/object_ptr)
       src: Source value (str for globals like 'PyList_Type',
            Register for temporary values or locals, LoadStatic
-           for statistics.)
+           for statics.)
     """
 
     error_kind = ERR_NEVER
diff --git a/mypyc/irbuild/classdef.py b/mypyc/irbuild/classdef.py
index daea4a249c81..7e0a842b1b41 100644
--- a/mypyc/irbuild/classdef.py
+++ b/mypyc/irbuild/classdef.py
@@ -519,7 +519,7 @@ def populate_non_ext_bases(builder: IRBuilder, cdef: ClassDef) -> Value:
             "typing.Container",
             "typing.Sized",
         ):
-            # HEX: Synthesized base classes added by mypy don't exist at runtime, so skip them.
+            # HAX: Synthesized base classes added by mypy don't exist at runtime, so skip them.
             #      This could break if they were added explicitly, though...
             continue
         # Add the current class to the base classes list of concrete subclasses
@@ -529,7 +529,7 @@ def populate_non_ext_bases(builder: IRBuilder, cdef: ClassDef) -> Value:
                 base_ir.children.append(ir)
 
         if cls.fullname in MAGIC_TYPED_DICT_CLASSES:
-            # HEX: Mypy internally represents TypedDict classes differently from what
+            # HAX: Mypy internally represents TypedDict classes differently from what
             #      should happen at runtime. Replace with something that works.
             module = "typing"
             if builder.options.capi_version < (3, 9):
diff --git a/mypyc/irbuild/expression.py b/mypyc/irbuild/expression.py
index 31a7be405bbd..8d7c089e20cd 100644
--- a/mypyc/irbuild/expression.py
+++ b/mypyc/irbuild/expression.py
@@ -109,7 +109,7 @@
 def transform_name_expr(builder: IRBuilder, expr: NameExpr) -> Value:
     if isinstance(expr.node, TypeVarLikeExpr) and expr.node.is_new_style:
         # Reference to Python 3.12 implicit TypeVar/TupleVarTuple/... object.
-        # These are stored in C statistics and not visible in Python namespaces.
+        # These are stored in C statics and not visible in Python namespaces.
         return builder.load_type_var(expr.node.name, expr.node.line)
     if expr.node is None:
         builder.add(
diff --git a/mypyc/irbuild/function.py b/mypyc/irbuild/function.py
index 1294de2b319c..c985e88b0e0c 100644
--- a/mypyc/irbuild/function.py
+++ b/mypyc/irbuild/function.py
@@ -514,7 +514,7 @@ def calculate_arg_defaults(
 ) -> None:
     """Calculate default argument values and store them.
 
-    They are stored in statistics for top level functions and in
+    They are stored in statics for top level functions and in
     the function objects for nested functions (while constants are
     still stored computed on demand).
     """
diff --git a/mypyc/test/test_namegen.py b/mypyc/test/test_namegen.py
index d6c3e78bb82e..509018b4c3bd 100644
--- a/mypyc/test/test_namegen.py
+++ b/mypyc/test/test_namegen.py
@@ -25,10 +25,10 @@ def test_make_module_translation_map(self) -> None:
             "foo.bar": "bar.",
             "foo.baz": "baz.",
         }
-        assert make_module_translation_map(["czar", "foo.bar", "foo.baz"]) == {
+        assert make_module_translation_map(["zar", "foo.bar", "foo.baz"]) == {
             "foo.bar": "bar.",
             "foo.baz": "baz.",
-            "czar": "czar.",
+            "zar": "zar.",
         }
         assert make_module_translation_map(["foo.bar", "fu.bar", "foo.baz"]) == {
             "foo.bar": "foo.bar.",
@@ -37,11 +37,11 @@ def test_make_module_translation_map(self) -> None:
         }
 
     def test_name_generator(self) -> None:
-        g = NameGenerator([["foo", "foo.czar"]])
+        g = NameGenerator([["foo", "foo.zar"]])
         assert g.private_name("foo", "f") == "foo___f"
         assert g.private_name("foo", "C.x.y") == "foo___C___x___y"
         assert g.private_name("foo", "C.x.y") == "foo___C___x___y"
-        assert g.private_name("foo.czar", "C.x.y") == "zar___C___x___y"
+        assert g.private_name("foo.zar", "C.x.y") == "zar___C___x___y"
         assert g.private_name("foo", "C.x_y") == "foo___C___x_y"
         assert g.private_name("foo", "C_x_y") == "foo___C_x_y"
         assert g.private_name("foo", "C_x_y") == "foo___C_x_y"
diff --git a/mypyc/transform/refcount.py b/mypyc/transform/refcount.py
index 455935b7a6ba..f2ab438f6576 100644
--- a/mypyc/transform/refcount.py
+++ b/mypyc/transform/refcount.py
@@ -187,7 +187,7 @@ def f(a: int) -> None
 
     term = block.terminator
     for i, target in enumerate(term.targets()):
-        # HEX: After we've checked against an error value the value we must not touch the
+        # HAX: After we've checked against an error value the value we must not touch the
         #      refcount since it will be a null pointer. The correct way to do this would be
         #      to perform data flow analysis on whether a value can be null (or is always
         #      null).