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: poker 
Words: fold, queen, deck, galley, call
galley

Category: geographical property 
Words: paved, even, hill, level, flat
even

Category: animals 
Words: push, ostrich, elephant, duck, horse

push