diff --git a/hangman.py b/hangman.py
index a7725cc..19132e2 100644
--- a/hangman.py
+++ b/hangman.py
@@ -6,11 +6,14 @@
 
 total_score = 0
 
-
+# words: list that stores all words in the collection
+# lives: integer that stores the total lives a user has (based on the level chosen)
 def get_valid_word(words, lives):
     """Gets word from words.py wihtout '-' or ' '."""
     word = ""
 
+    # makes a new list of words based on their lengths 
+    # and then chooses a word randomly from the new list
     if lives == 12:
         word_dict = [word for word in words if len(word) >= 4 and len(word) <= 6]
         word = random.choice(word_dict)
@@ -24,7 +27,7 @@ def get_valid_word(words, lives):
         word_dict = [word for word in words if len(word) > 10]
         word = random.choice(word_dict)
 
-    # check for foul words
+    # until a word contains ' ' or '-', choose another word randomly
     while '-' in word or ' ' in word:
         word = random.choice(word_dict)
 
@@ -36,12 +39,14 @@ def hangman():
 
     global total_score
 
-    lives = ask_for_level()
-    word = get_valid_word(words, lives)
-    word_letters = set(word)
-    alphabet = set(string.ascii_uppercase)
-    used_letters = set()
+    lives = ask_for_level() # saves the number of lives
+    word = get_valid_word(words, lives) # gets a random word based on difficulty
+    word_letters = set(word)    # makes a set of the letters of randomly chosen word
+    alphabet = set(string.ascii_uppercase) #stores A-Z in alphabet
+    used_letters = set()    # makes an empty set to store used letters
 
+    # stores dictionary of lives visual (from hangman_visual.py) in visual
+    # according to the difficulty of the game 
     if lives == 12:
         visual = lives_visual_dict_easy
         point = int(1)
@@ -55,30 +60,33 @@ def hangman():
         visual = lives_visual_dict_impossible
         point = int(15)
 
+    # the loop breaks when either the lives become zero or the word is guessed
     while len(word_letters) > 0 and lives > 0:
-
+        
+        # prints the number of lives remaining and letters used
         print(f"\nYou have {lives} lives left and you have used the letters:", " ".join(used_letters))
 
+        # prints the visual and letters guessed correctly in the word
         word_list = [letter if letter in used_letters else '-' for letter in word]
         print(visual[lives])
         print(f"Current word: ", " ".join(word_list))
 
         user_letter = input("Guess a letter: ").upper()
 
-        if user_letter in alphabet - used_letters:
+        if user_letter in alphabet - used_letters: 
             used_letters.add(user_letter)
-            if user_letter in word_letters:
+            if user_letter in word_letters:  # if the input letter is the right guess
                 word_letters.remove(user_letter)
                 print('')
 
-            else:
+            else:   # if the input letter is not the right guess
                 lives = lives - 1
                 print(f"\nYou have guessed the wrong letter... {user_letter} not in the word.")
 
-        elif user_letter in used_letters:
+        elif user_letter in used_letters:  # if the letter is already inputted
             print("\nYou have already guessed that number.")
 
-        else:
+        else:   # invalid letter
             print(f"{user_letter} is not a valid input.")
 
             # gets here when len(word_letters) == 0 or lives == 0
@@ -135,6 +143,7 @@ def ask_for_level():
     lives accordingly.
     """
 
+    # loop infinitely iterate until player chooses the difficulty i.e. e, m, h or i
     while True:
         print("\n1) Easy (e): Lives: 12")
         print("2) Medium (m): Lives: 9")