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: poker 
Words: punch, pack, deck, check, fold
Example Output: punch

Example Input: Category: moral characteristic 
Words: milky, fair, ok, loyal, unprejudiced
Example Output: milky

Example Input: Category: moral characteristic 
Words: just, ok, honorable, fair, sunny
Example Output:
sunny