narwal vs narwhale

narwal and narwhale both are nouns.

Word	Noun	Adjective	Verb	Adverb
narwal	Yes	No	No	No
narwhale	Yes	No	No	No

As nouns, narwal and narwhale are synonyms defined as:

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

Other synonyms of narwal include Monodon monoceros, narwhal.

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