Oncorhynchus vs genus Oncorhynchus

Oncorhynchus and genus Oncorhynchus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oncorhynchus	Yes	No	No	No
genus Oncorhynchus	Yes	No	No	No

As nouns, Oncorhynchus and genus Oncorhynchus are synonyms defined as:

Oncorhynchus and genus Oncorhynchus: Pacific salmon including sockeye salmon, chinook salmon, chum salmon, coho salmon

Oncorhynchus (noun)	genus Oncorhynchus (noun)
Pacific salmon including sockeye salmon, chinook salmon, chum salmon, coho salmon	Pacific salmon including sockeye salmon, chinook salmon, chum salmon, coho salmon