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.

Q: Category: accomodation 
Words: apartment, lined, house, condominium, flat

A: lined
****
Q: Category: bird 
Words: concrete pourer, flamingo, egret, crane, duck

A: concrete pourer
****
Q: Category: moral characteristic 
Words: mild, honorable, impartial, fair, alright

A:
mild
****