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]: deck, knockout, bow, sail, rudder
[A]: knockout


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


[Q]: deck, ring, rudder, canvas, level
[A]:
rudder