cotyloid joint vs enarthrosis

cotyloid joint and enarthrosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
cotyloid joint	Yes	No	No	No
enarthrosis	Yes	No	No	No

As nouns, cotyloid joint and enarthrosis are synonyms defined as:

cotyloid joint and enarthrosis: a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone

Other synonyms of cotyloid joint include articulatio spheroidea, ball-and-socket joint, enarthrodial joint, spheroid joint.

cotyloid joint (noun)	enarthrosis (noun)
a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone	a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone