Phalaris aquatica vs Harding grass

Phalaris aquatica and Harding grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Phalaris aquatica	Yes	No	No	No
Harding grass	Yes	No	No	No

As nouns, Phalaris aquatica and Harding grass are synonyms defined as:

Phalaris aquatica and Harding grass: perennial grass of Australia and South Africa; introduced in North America as forage grass

Other synonyms of Phalaris aquatica include hardinggrass, Phalaris tuberosa, toowomba canary grass.

Phalaris aquatica (noun)	Harding grass (noun)
perennial grass of Australia and South Africa; introduced in North America as forage grass	perennial grass of Australia and South Africa; introduced in North America as forage grass