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: townhome, mountain, studio, flat, apartment

A: mountain
****
Q: cupcake, fudge, tart, smear, cream

A: smear
****
Q: wrongful, pudding, fudge, truffles, brownies

A:
wrongful
****