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: raining, sunny, fair, ghostly, windy
ghostly

Category: window material 
Words: metal, handle, dish, glass, vinyl
dish

Category: aesthetic characteristic 
Words: color, milky, fair, 70, medium

70