sandwort vs genus Moehringia

sandwort and genus Moehringia both are nouns.

Word	Noun	Adjective	Verb	Adverb
sandwort	Yes	No	No	No
genus Moehringia	Yes	No	No	No

sandwort (noun)	genus Moehringia (noun)
low-growing chiefly perennial plant usually with small white flowers suitable for e.g. rock gardens	low-growing herbs widely distributed in temperate and Arctic Northern Hemisphere: sandworts; distinguished from members of the genus Arenaria mainly by having four-petaled rather than five-petaled flowers
low-growing herb having clusters of small white four-petaled flowers
loosely matted plant with moss-like foliage studded with tiny starry four-petaled white blossoms; mountains of central and southern Europe