narwhale vs narwhal

narwhale and narwhal both are nouns.

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

As nouns, narwhale and narwhal are synonyms defined as:

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

Other synonyms of narwhale include Monodon monoceros, narwal.

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