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: activity 
Words: divide, croquet, fritter, squander, spend
Example Output: croquet

Example Input: Category: moral characteristic 
Words: unprejudiced, warm, fair, ok, balanced
Example Output: warm

Example Input: Category: kitchenware 
Words: spatula, knive, vinyl, knifer, glass
Example Output:
vinyl