Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
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Question: Category: physical property 
Words: ugly, protein, large, heavy, fat

Answer: protein


Question: Category: boxing terminology 
Words: canvas, tko, deck, joker, fight

Answer: joker


Question: Category: fried food 
Words: sweet roll, fritter, fried, misuse, doughnut

Answer:
misuse