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: icy, hot, cool, refreshing, relaxed

A: relaxed
****
Q: doorstep, community, open-faced, club, hoagie

A: community
****
Q: notes, sad, amp, truss rod, fret

A:
sad
****