Osmerus mordax vs rainbow smelt

Osmerus mordax and rainbow smelt both are nouns.

Word	Noun	Adjective	Verb	Adverb
Osmerus mordax	Yes	No	No	No
rainbow smelt	Yes	No	No	No

As nouns, Osmerus mordax and rainbow smelt are synonyms defined as:

Osmerus mordax and rainbow smelt: important marine and landlocked food fish of eastern North America and Alaska

Osmerus mordax (noun)	rainbow smelt (noun)
important marine and landlocked food fish of eastern North America and Alaska	important marine and landlocked food fish of eastern North America and Alaska
	common smelt of eastern North America and Alaska