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]: bow, fold, hull, deck, head
[A]: fold


[Q]: colonel, ordinary, standard, ubiquitous, general
[A]: colonel


[Q]: water, fire, ice, scold, air
[A]:
scold