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.

Category: weather 
Words: equitable, fair, windy, cold, raining
equitable

Category: police punishment 
Words: wispy, fine, probation, calm, prime
calm

Category: consumer product 
Words: clothing, thing, content, excited, merchandise

excited