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.

Example Input: Category: weather 
Words: stormy, make the grade, sunny, texture, fair
Example Output: texture

Example Input: Category: emotional status 
Words: descending, disgusted, down, miserable, emotional
Example Output: descending

Example Input: Category: employment activity 
Words: water, promote, empower, instruct, fire
Example Output:
water