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: chocolate food 
Words: fudge, cream, replace, cookies, brownies

Answer: replace


Question: Category: construction 
Words: hoist, crane, excavator, egret, derrick

Answer: egret


Question: Category: corporate 
Words: firm, shareholders, common, synergy, resistant

Answer:
resistant