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.

[EX Q]: ugly, absorption, vitamin c, fat, thin
[EX A]: vitamin c

[EX Q]: deck, crew, fight, knockout, tko
[EX A]: crew

[EX Q]: motherboard, schedule appointments, schedule, file, type
[EX A]:
motherboard