Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Category: food 
Words: blunt, entree, frank, wienerwurst, bun
blunt

Category: animal 
Words: jog, jump, fish, fly, bats
jog

Category: aesthetic characteristic 
Words: suspension, dull, exquisite, fine, handsome

suspension