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 status 
Words: emotional, ground, ashamed, emotional upsets, down
Example Output: ground

Example Input: Category: food 
Words: sausage, frank, loyalty, cheese, pork
Example Output: loyalty

Example Input: Category: poker 
Words: punch, deck, pack, board, draw
Example Output:
punch