acetabular vs cotyloidal

acetabular and cotyloidal both are adjectives.

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

As adjectives, acetabular and cotyloidal are synonyms defined as:

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

Other synonyms of acetabular include cotyloid.

acetabular (adjective)	cotyloidal (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