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 status 
Words: descending, disgusted, down, miserable, emotional

Answer: descending


Question: Category: elements 
Words: ice, air, fire, hire, combustion

Answer: hire


Question: Category: secretary duty 
Words: schedule appointments, file, image, schedule, make coffee

Answer:
image