acetabular vs cotyloid

acetabular and cotyloid both are adjectives.

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

As adjectives, acetabular and cotyloid are synonyms defined as:

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

Other synonyms of acetabular include cotyloidal.

acetabular (adjective)	cotyloid (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