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]: flat, level, mansion, smooshed, elevation
[A]: mansion


[Q]: cool, relaxed, mild, unflappalbe, assured
[A]: mild


[Q]: dish, knife, knifer, glass, coating
[A]:
coating