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: glass, wood, coating, knifer, woodwork

A: knifer
****
Q: fine, level, pretty, mad, detailed

A: mad
****
Q: falsification, banned, mangle, chocolate cake, fudge

A:
chocolate cake
****