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: corporate 
Words: unyielding, firm, streamline, llc, private
Example Output: unyielding

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

Example Input: Category: accomodation 
Words: squashed, condominium, flat, even, level
Example Output:
even