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]: fair, endure, mild, color, tangle
[A]: color


[Q]: ecstatic, specialty, substance, content, merchandise
[A]: ecstatic


[Q]: amp, notes, headstock, fret, worried
[A]:
worried