cotyloidal vs acetabular

cotyloidal and acetabular both are adjectives.

Word	Noun	Adjective	Verb	Adverb
cotyloidal	No	Yes	No	No
acetabular	No	Yes	No	No

As adjectives, cotyloidal and acetabular are synonyms defined as:

cotyloidal and acetabular: of the cup-shaped socket that receives the head of the thigh bone

Other synonyms of cotyloidal include cotyloid.

cotyloidal (adjective)	acetabular (adjective)
of the cup-shaped socket that receives the head of the thigh bone	of the cup-shaped socket that receives the head of the thigh bone