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: smuggled, brownie, fudge, pudding, truffles

Answer: smuggled


Question: Category: boats 
Words: lifeline, stern, fold, deck, rudder

Answer: fold


Question: Category: moral characteristic 
Words: brash, frank, integrity, precise, bun

Answer:
bun