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.
--------
Question: cake, fudge, rich, invent, cream

Answer: invent


Question: lead, glass, spoon, fiberglass, spyhole

Answer: spoon


Question: size, dishonest, unjust, well, fair

Answer:
size