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: weather 
Words: fair, sunny, stormy, make the grade, variety
variety

Category: boxing terminology 
Words: glove, level, deck, corner, board
board

Category: aesthetic characteristic 
Words: fair, medium, light, unjust, flaxen

unjust