anterior naris vs nostril

anterior naris and nostril both are nouns.

Word	Noun	Adjective	Verb	Adverb
anterior naris	Yes	No	No	No
nostril	Yes	No	No	No

As nouns, anterior naris and nostril are synonyms defined as:

anterior naris and nostril: either one of the two external openings to the nasal cavity in the nose

anterior naris (noun)	nostril (noun)
either one of the two external openings to the nasal cavity in the nose	either one of the two external openings to the nasal cavity in the nose