trunk vs shoulder joint

trunk and shoulder joint both are nouns.

Word	Noun	Adjective	Verb	Adverb
trunk	Yes	No	No	No
shoulder joint	Yes	No	No	No

trunk (noun)	shoulder joint (noun)
a long flexible snout as of an elephant	a ball-and-socket joint between the head of the humerus and a cavity of the scapula
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