Sylvian aqueduct vs aqueductus cerebri

Sylvian aqueduct and aqueductus cerebri both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sylvian aqueduct	Yes	No	No	No
aqueductus cerebri	Yes	No	No	No

As nouns, Sylvian aqueduct and aqueductus cerebri are synonyms defined as:

Sylvian aqueduct and aqueductus cerebri: a canal connecting the third and fourth ventricles

Other synonyms of Sylvian aqueduct include cerebral aqueduct.

Sylvian aqueduct (noun)	aqueductus cerebri (noun)
a canal connecting the third and fourth ventricles	a canal connecting the third and fourth ventricles