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: emotional display 
Words: pester, fawn, suppressed, follow, woods

Answer: woods


Question: Category: employment activity 
Words: fire, hire, ground, pay, retire

Answer: ground


Question: Category: personal characteristic 
Words: classy, persistent, unflappalbe, cool, chill

Answer:
chill