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]: stern, frank, weenie, brash, matter of fact
[A]: weenie


[Q]: cake, fudge, rich, invent, cream
[A]: invent


[Q]: concerned, emotional supports, headstock, fret, emotional upsets
[A]:
headstock