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: activity 
Words: divide, fritter, dessert, whittle, spend
dessert

Category: emotional status 
Words: high quality, fine, annoyed, relaxed, ok
high quality

Category: guitar part 
Words: chord, truss rod, bored, fret, string

bored