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: emotional display 
Words: fawn, antling, lust, suppressed, love
Example Output: antling

Example Input: Category: poker 
Words: fold, queen, deck, galley, call
Example Output: galley

Example Input: Category: moral characteristic 
Words: impartial, equitable, fair, unprejudiced, mild
Example Output:
mild