gardener's garters vs ribbon grass

gardener's garters and ribbon grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
gardener's garters	Yes	No	No	No
ribbon grass	Yes	No	No	No

As nouns, gardener's garters and ribbon grass are synonyms defined as:

gardener's garters and ribbon grass: perennial grass of marshy meadows and ditches having broad leaves; Europe and North America

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

gardener's garters (noun)	ribbon 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