cotyloid vs acetabular

cotyloid and acetabular both are adjectives.

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

As adjectives, cotyloid and acetabular are synonyms defined as:

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

Other synonyms of cotyloid include cotyloidal.

cotyloid (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