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: emotional display 
Words: follow, doe, suppressed, culture, fawn
Example Output: doe

Example Input: Category: emotional status 
Words: fine, detached, decent, well, beautiful
Example Output:
beautiful