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: moral characteristic 
Words: precise, grub, frank, stern, honesty
Example Output: grub

Example Input: Category: emotional status 
Words: board, bored, emotional supports, frustrated, fret
Example Output: board

Example Input: Category: employment activity 
Words: scold, praise, blaze, retire, fire
Example Output:
blaze