blueback salmon vs sockeye

blueback salmon and sockeye both are nouns.

Word	Noun	Adjective	Verb	Adverb
blueback salmon	Yes	No	No	No
sockeye	Yes	No	No	No

As nouns, blueback salmon and sockeye are synonyms defined as:

blueback salmon 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 blueback salmon include Oncorhynchus nerka, red salmon, sockeye salmon.

blueback salmon (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