dorsum vs trunk

dorsum and trunk both are nouns.

Word	Noun	Adjective	Verb	Adverb
dorsum	Yes	No	No	No
trunk	Yes	No	No	No

dorsum (noun)	trunk (noun)
the back of the body of a vertebrate or any analogous surface (as the upper or outer surface of an organ or appendage or part)	a long flexible snout as of an elephant
the posterior part of a human (or animal) body from the neck to the end of the spine	luggage consisting of a large strong case used when traveling or for storage
	compartment in an automobile that carries luggage or shopping or tools
	the body excluding the head and neck and limbs
	the main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber