Salmo salar vs Atlantic salmon

Salmo salar and Atlantic salmon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Salmo salar	Yes	No	No	No
Atlantic salmon	Yes	No	No	No

As nouns, Salmo salar and Atlantic salmon are synonyms defined as:

Salmo salar and Atlantic salmon: found in northern coastal Atlantic waters or tributaries; adults do not die after spawning

Salmo salar (noun)	Atlantic salmon (noun)
found in northern coastal Atlantic waters or tributaries; adults do not die after spawning	found in northern coastal Atlantic waters or tributaries; adults do not die after spawning
	fatty pink flesh of fish from northern coastal Atlantic; usually marketed fresh