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: boxing terminology 
Words: deck, ring, head, knockout, glove

Answer: head


Question: Category: aesthetic characteristic 
Words: ticket, fine, bright, detailed, exquisite

Answer: ticket


Question: Category: direction 
Words: down, flat, miserable, right, below

Answer:
miserable