ribbon grass vs reed canary grass

ribbon grass and reed canary grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
ribbon grass	Yes	No	No	No
reed canary grass	Yes	No	No	No

As nouns, ribbon grass and reed canary grass are synonyms defined as:

ribbon grass and reed canary grass: perennial grass of marshy meadows and ditches having broad leaves; Europe and North America

Other synonyms of ribbon grass include gardener's garters, lady's laces, Phalaris arundinacea.

ribbon grass (noun)	reed canary grass (noun)
perennial grass of marshy meadows and ditches having broad leaves; Europe and North America	perennial grass of marshy meadows and ditches having broad leaves; Europe and North America