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: location (proximity) 
Words: near, close, gated, bordering, on top of
gated

Category: construction 
Words: hoist, crane, excavator, egret, derrick
egret

Category: boxing terminology 
Words: dock, canvas, deck, ring, glove

dock