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: medium, just, light, ghostly, fair

Answer: just


Question: Category: date status 
Words: delayed, current, whirlpool, do tests, up to the moment

Answer: whirlpool


Question: Category: geographical property 
Words: paved, smooth, flat, elevation, level

Answer:
paved