cranial orbit vs eye socket

cranial orbit and eye socket both are nouns.

Word	Noun	Adjective	Verb	Adverb
cranial orbit	Yes	No	No	No
eye socket	Yes	No	No	No

As nouns, cranial orbit and eye socket are synonyms defined as:

cranial orbit and eye socket: the bony cavity in the skull containing the eyeball

Other synonyms of cranial orbit include orbit, orbital cavity.

cranial orbit (noun)	eye socket (noun)
the bony cavity in the skull containing the eyeball	the bony cavity in the skull containing the eyeball