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: aesthetic characteristic 
Words: ghostly, milky, windy, fair, texture

Answer: windy


Question: Category: direction 
Words: remorseful, south, descending, downward, down

Answer: remorseful


Question: Category: military rank 
Words: cadet, general, commander, private, average

Answer:
average