Monodon monoceros vs narwal

Monodon monoceros and narwal both are nouns.

Word	Noun	Adjective	Verb	Adverb
Monodon monoceros	Yes	No	No	No
narwal	Yes	No	No	No

As nouns, Monodon monoceros and narwal are synonyms defined as:

Monodon monoceros and narwal: small Arctic whale the male having a long spiral ivory tusk

Other synonyms of Monodon monoceros include narwhal, narwhale.

Monodon monoceros (noun)	narwal (noun)
small Arctic whale the male having a long spiral ivory tusk	small Arctic whale the male having a long spiral ivory tusk