hardinggrass vs Phalaris aquatica

hardinggrass and Phalaris aquatica both are nouns.

Word	Noun	Adjective	Verb	Adverb
hardinggrass	Yes	No	No	No
Phalaris aquatica	Yes	No	No	No

As nouns, hardinggrass and Phalaris aquatica are synonyms defined as:

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

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

hardinggrass (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