positional argument: 'self'

[mcmxl22]

I write the following code and get the following error.

import random

word_list = ['a', 'ranom', 'list', 'of', 'words']

class Word:
    
    def get_word(self):
        words = random.choice(word_list)
        return words


w = Word.get_word()
print(w)

Error:
Traceback (most recent call last):
  File "c:\Users\mcmxl\mystuff\hangman\test_hangman.py", line 13, in <module>
    w = Word.get_word()
TypeError: get_word() missing 1 required positional argument: 'self'

If I change line 13 to w = Word.get_word('') everything works fine. I know there is a way to make it so I don't have to
use the empty string as the self argument. Could someone explain it to me?