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: baby animals 
Words: buck, bambi, lust, fawn, deer
lust

Category: moral characteristic 
Words: windy, fair, just, ok, loyal
windy

Category: consumer product 
Words: program, jealous, content, substance, file

jealous