aortic orifice vs porta

aortic orifice and porta both are nouns.

Word	Noun	Adjective	Verb	Adverb
aortic orifice	Yes	No	No	No
porta	Yes	No	No	No

As nouns, porta is a hypernym of aortic orifice; that is, porta is a word with a broader meaning than aortic orifice:

aortic orifice: the orifice from the lower left chamber of the heart to the aorta
porta: an aperture or hole that opens into a bodily cavity

Other hypernyms of aortic orifice include opening, orifice.

aortic orifice (noun)	porta (noun)
the orifice from the lower left chamber of the heart to the aorta	an aperture or hole that opens into a bodily cavity