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: type of sandwich 
Words: submarine, group, club, roll, grilled cheese
group

Category: moral characteristic 
Words: loyal, alright, fair, unprejudiced, 70
70

Category: store status 
Words: slow, neighboring, locked, close, steady

neighboring