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]: truss rod, emotional supports, emotional upsets, emotionalities, fret
[A]: truss rod


[Q]: condominium, smooshed, lined, smooth, flat
[A]: condominium


[Q]: postponed, moon, jetstream, current, sea
[A]:
postponed