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: body part 
Words: foot, knee, eye, leg, ounce
ounce

Category: type of sandwich 
Words: french toast, community, club, burger, dagwood
community

Category: direction 
Words: below, down, up, left, shameful

shameful