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: deck, crew, fight, knockout, tko

A: crew
****
Q: up to the moment, current, detests, tide, history

A: tide
****
Q: honesty, frank, loyalty, concise, bun

A:
bun
****