sand reed vs Carex arenaria

sand reed and Carex arenaria both are nouns.

Word	Noun	Adjective	Verb	Adverb
sand reed	Yes	No	No	No
Carex arenaria	Yes	No	No	No

As nouns, sand reed and Carex arenaria are synonyms defined as:

sand reed and Carex arenaria: European maritime sedge naturalized along Atlantic coast of United States; rootstock has properties of sarsaparilla

Other synonyms of sand reed include sand sedge.

sand reed (noun)	Carex arenaria (noun)
European maritime sedge naturalized along Atlantic coast of United States; rootstock has properties of sarsaparilla	European maritime sedge naturalized along Atlantic coast of United States; rootstock has properties of sarsaparilla