PythonでのTypeError: 'str' object is not callableについて

前提・実現したいこと

higherlower gameをpython3.Xで作ろうとしているのですが、以下のエラーコードが出てきます。

発生している問題・エラーメッセージ

Traceback (most recent call last):
  File "main.py", line 42, in <module>
    play_game()
  File "main.py", line 38, in play_game
    compare(person1, person2, answer)
TypeError: 'str' object is not callable

該当のソースコード

Python
1from game_data import data
2import art
3import random
4from replit import clear
5
6SCORE = 0
7IS_GAME_OVER = False
8
9def random_person(compare_against):
10    random_user = random.choice(data)
11    user_name = random_user["name"]
12    user_followers = random_user["follower_count"]
13    user_description = random_user["description"]
14    user_country = random_user["country"]
15    print(f"{compare_against}: {user_name}, {user_description}, from {user_country}.")
16    return user_followers
17
18def compare(person1_compare, person2_compare, answer_compare):
19    global SCORE, IS_GAME_OVER
20    if person1_compare > person2_compare and answer_compare == "B":
21        IS_GAME_OVER = True
22    elif person1_compare < person2_compare and answer_compare == "A":
23        IS_GAME_OVER = True
24    else:
25        return SCORE + 1
26
27
28def play_game():
29    global SCORE, IS_GAME_OVER
30    while not IS_GAME_OVER:
31        print(art.logo)
32        compare = "Compare A"
33        person1 = random_person(compare)
34        print(art.vs)
35        against = "Against B"
36        person2 = random_person(against)
37        answer = input("Who has more followers? Type 'A' or 'B': ")
38        compare(person1, person2, answer)
39        clear()
40    print(f"Sorry, That's wrong. Final score: {SCORE}")
41
42play_game()