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: guitar part 
Words: neck, strap lock, fret, angry, notes
angry

Category: secretary duty 
Words: answer calls, image, organize, file, correspondence
image

Category: weather 
Words: raining, cold, sunny, alright, fair

alright