toowomba canary grass vs genus Phalaris

toowomba canary grass and genus Phalaris both are nouns.

Word	Noun	Adjective	Verb	Adverb
toowomba canary grass	Yes	No	No	No
genus Phalaris	Yes	No	No	No

toowomba canary grass (noun)	genus Phalaris (noun)
perennial grass of Australia and South Africa; introduced in North America as forage grass	a genus of grasses with broad leaves and a dense spike of flowers