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: canvas, blocking, deck, sail, corner

A: sail
****
Q: ecstatic, specialty, substance, content, merchandise

A: ecstatic
****
Q: round, flat, studio, condominium, elevation

A:
elevation
****