Oncorhynchus nerka vs sockeye

Oncorhynchus nerka and sockeye both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oncorhynchus nerka	Yes	No	No	No
sockeye	Yes	No	No	No

As nouns, Oncorhynchus nerka and sockeye are synonyms defined as:

Oncorhynchus nerka and sockeye: small salmon with red flesh; found in rivers and tributaries of the northern Pacific and valued as food; adults die after spawning

Other synonyms of Oncorhynchus nerka include blueback salmon, red salmon, sockeye salmon.

Oncorhynchus nerka (noun)	sockeye (noun)
small salmon with red flesh; found in rivers and tributaries of the northern Pacific and valued as food; adults die after spawning	small salmon with red flesh; found in rivers and tributaries of the northern Pacific and valued as food; adults die after spawning
	fatty red flesh of salmon of Pacific coast and rivers