articulatio humeri vs shoulder joint

articulatio humeri and shoulder joint both are nouns.

Word	Noun	Adjective	Verb	Adverb
articulatio humeri	Yes	No	No	No
shoulder joint	Yes	No	No	No

As nouns, articulatio humeri and shoulder joint are synonyms defined as:

articulatio humeri and shoulder joint: a ball-and-socket joint between the head of the humerus and a cavity of the scapula

Other synonyms of articulatio humeri include shoulder.

articulatio humeri (noun)	shoulder joint (noun)
a ball-and-socket joint between the head of the humerus and a cavity of the scapula	a ball-and-socket joint between the head of the humerus and a cavity of the scapula