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: cupcake, fudge, tart, smear, cream

A: smear
****
Q: down, kind, opposite of up, lower, ground

A: kind
****
Q: davit, crane, concrete pourer, excavator, ostrich

A:
ostrich
****