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.

[EX Q]: bored, amp, board, fret, truss rod
[EX A]: bored

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

[EX Q]: excavator, swift, crane, hoist, winch
[EX A]:
excavator