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: aesthetic characteristic 
Words: there, ticket, fine, dull, level
Example Output: ticket

Example Input: Category: fried food 
Words: croquet, dumpling, fritter, spend, patty
Example Output: spend

Example Input: Category: moral characteristic 
Words: loyalty, courage, brash, grub, frank
Example Output:
grub