buttock vs body

buttock and body both are nouns.

Word	Noun	Adjective	Verb	Adverb
buttock	Yes	No	No	No
body	Yes	No	Yes	No

buttock (noun)	body (noun)
either of the two large fleshy masses of muscular tissue that form the human rump	the external structure of a vehicle
	a resonating chamber in a musical instrument (as the body of a violin)
	the property of holding together and retaining its shape
	the main mass of a thing
	the entire physical structure of an organism (an animal, plant, or human being)
	the body excluding the head and neck and limbs
	a natural object consisting of a dead animal or person
	the central message of a communication
	a group of persons associated by some common tie or occupation and regarded as an entity
	a collection of particulars considered as a system
	an individual 3-dimensional object that has mass and that is distinguishable from other objects

buttock (verb)	body (verb)
	invest with or as with a body; give body to