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: animal 
Words: hamster, fish, tiger, canyoning, sea turtle
canyoning

Category: weather 
Words: stormy, make the grade, fair, luke, honorable
honorable

Category: corporate 
Words: concerted, stiff, llc, firm, shareholders

stiff