TASK DEFINITION: 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.
PROBLEM: Category: moral characteristic 
Words: decent, impartial, light, fair, dishonest

SOLUTION: light

PROBLEM: Category: physical property 
Words: thin, brittleness, heavy, angular momentum, fat

SOLUTION: heavy

PROBLEM: Category: guitar part 
Words: strap lock, fret, emotional upsets, output cord, inlays

SOLUTION:
emotional upsets