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: brownies, falsification, fudge, rich, heavy

Answer: falsification


Question: Category: bird 
Words: winch, swift, crane, hoist, ostrich

Answer: winch


Question: Category: store status 
Words: bordering, shut down, close, slow, open

Answer:
bordering