gardener's garters vs Phalaris arundinacea

gardener's garters and Phalaris arundinacea both are nouns.

Word	Noun	Adjective	Verb	Adverb
gardener's garters	Yes	No	No	No
Phalaris arundinacea	Yes	No	No	No

As nouns, gardener's garters and Phalaris arundinacea are synonyms defined as:

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

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

gardener's garters (noun)	Phalaris arundinacea (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