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: elements 
Words: ground, replace, combustion, flame, fire
Example Output: replace

Example Input: Category: chocolate food 
Words: smuggled, brownie, fudge, pudding, truffles
Example Output: smuggled

Example Input: Category: date status 
Words: current, jetstream, detests, late, history
Example Output:
jetstream