Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Q: fire, blaze, water, flame, recruit

A: recruit
****
Q: neat, fine, classy, penalty, high quality

A: penalty
****
Q: swoon, paw, social, cub, fawn

A:
cub
****