Phalaris canariensis vs birdseed grass

Phalaris canariensis and birdseed grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Phalaris canariensis	Yes	No	No	No
birdseed grass	Yes	No	No	No

As nouns, Phalaris canariensis and birdseed grass are synonyms defined as:

Phalaris canariensis and birdseed grass: Canary Islands grass; seeds used as feed for caged birds

Other synonyms of Phalaris canariensis include canary grass.

Phalaris canariensis (noun)	birdseed grass (noun)
Canary Islands grass; seeds used as feed for caged birds	Canary Islands grass; seeds used as feed for caged birds