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: boxing terminology 
Words: apron, punch, deck, canvas, call

Answer: call


Question: Category: employment activity 
Words: sack, inferno, promote, empower, fire

Answer: inferno


Question: Category: fried food 
Words: pie, dunker, misuse, croquet, fritter

Answer:
misuse