sandwort vs Arenaria

sandwort and Arenaria both are nouns.

Word	Noun	Adjective	Verb	Adverb
sandwort	Yes	No	No	No
Arenaria	Yes	No	No	No

sandwort (noun)	Arenaria (noun)
low-growing chiefly perennial plant usually with small white flowers suitable for e.g. rock gardens	turnstones
low-growing herb having clusters of small white four-petaled flowers	sandworts
loosely matted plant with moss-like foliage studded with tiny starry four-petaled white blossoms; mountains of central and southern Europe