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: gunwale, deck, punch, sail, bow

A: punch
****
Q: ugly, absorption, vitamin c, fat, thin

A: vitamin c
****
Q: fold, deck, board, gunwale, cards

A:
gunwale
****