Saxifraga aizoides vs genus Saxifraga

Saxifraga aizoides and genus Saxifraga both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saxifraga aizoides	Yes	No	No	No
genus Saxifraga	Yes	No	No	No

Saxifraga aizoides (noun)	genus Saxifraga (noun)
tufted evergreen perennial having ciliate leaves and yellow corymbose flowers often spotted orange	type genus of the Saxifragaceae; large genus of usually perennial herbs of Arctic and cool regions of Northern Hemisphere: saxifrage