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: concerned, strap lock, anxious, bored, fret

A: strap lock
****
Q: fawn, love, calf, flatter, identity

A: calf
****
Q: ostrich, tackle, digger, crane, windlass

A:
ostrich
****