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: accomodation 
Words: elevation, level, round, flat, townhome

Answer: elevation


Question: Category: emotional status 
Words: fret, truss rod, emotional upsets, sad, worried

Answer: truss rod


Question: Category: secretary duty 
Words: file, answer, format, schedule, errands

Answer:
format