pine-barren sandwort vs longroot

pine-barren sandwort and longroot both are nouns.

Word	Noun	Adjective	Verb	Adverb
pine-barren sandwort	Yes	No	No	No
longroot	Yes	No	No	No

As nouns, pine-barren sandwort and longroot are synonyms defined as:

pine-barren sandwort and longroot: deep-rooted perennial of southeastern United States

Other synonyms of pine-barren sandwort include Arenaria caroliniana.

pine-barren sandwort (noun)	longroot (noun)
deep-rooted perennial of southeastern United States	deep-rooted perennial of southeastern United States