hardinggrass vs toowomba canary grass

hardinggrass and toowomba canary grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
hardinggrass	Yes	No	No	No
toowomba canary grass	Yes	No	No	No

As nouns, hardinggrass and toowomba canary grass are synonyms defined as:

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

Other synonyms of hardinggrass include Harding grass, Phalaris aquatica, Phalaris tuberosa.

hardinggrass (noun)	toowomba canary 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