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]: fib, fudge, fix, cookies, falsehood
[A]: cookies


[Q]: flaxen, fair, sunny, cool, pale
[A]: sunny


[Q]: ground, replace, combustion, flame, fire
[A]:
replace