articulatio vs body part

articulatio and body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
articulatio	Yes	No	No	No
body part	Yes	No	No	No

As nouns, body part is a hypernym of articulatio; that is, body part is a word with a broader meaning than articulatio:

articulatio: (anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)
body part: any part of an organism such as an organ or extremity

articulatio (noun)	body part (noun)
(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)	any part of an organism such as an organ or extremity