Harding grass vs Phalaris aquatica

Harding grass and Phalaris aquatica both are nouns.

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

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

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

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

Harding grass (noun)	Phalaris aquatica (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