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: boats 
Words: crew, deck, rudder, suits, hull
suits

Category: physical activity 
Words: stoop, crouch, bow, duck, dog
dog

Category: baby animals 
Words: kid, fawn, cajole, woods, bambi

cajole