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]: fish, stingray, climbing, trap, hiking
[A]: stingray


[Q]: emotional upsets, pick, emotional state, fret, emotional supports
[A]: pick


[Q]: schedule, errands, file, schedule appointments, hardware
[A]:
hardware