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: flaxen, fair, sunny, cool, pale

A: sunny
****
Q: deck, stern, apron, blocking, caution

A: stern
****
Q: capacitance, ugly, fat, skinny, vitamin c

A:
vitamin c
****