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: aesthetic characteristic 
Words: fair, flaxen, well, color, pale
well

Category: animal 
Words: goat, stingray, tiger, hike, fish
hike

Category: boats 
Words: sail, bow, blind, dock, deck

blind