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]: windlass, excavator, crane, hummingbird, steam roller
[A]: hummingbird


[Q]: flutter, soar, bee, jog, fly
[A]: bee


[Q]: deck, tko, rudder, level, corner
[A]:
rudder