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: fine, relaxed, comfortable, prime, content
Example Output: prime

Example Input: Category: chocolate food 
Words: cake, cupcake, cream, smuggled, fudge
Example Output: smuggled

Example Input: Category: food 
Words: pork, grub, frank, honesty, entree
Example Output:
honesty