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: physical property 
Words: fat, area, ugly, capacitance, calcium

Answer: calcium


Question: Category: weather 
Words: honorable, fair, stormy, sunny, endure

Answer: honorable


Question: Category: aesthetic characteristic 
Words: dull, attractive, exquisite, fine, flyaway

Answer:
flyaway