Saxifraga vs genus Saxifraga

Saxifraga and genus Saxifraga both are nouns.

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

As nouns, Saxifraga and genus Saxifraga are synonyms defined as:

Saxifraga and genus Saxifraga: type genus of the Saxifragaceae; large genus of usually perennial herbs of Arctic and cool regions of Northern Hemisphere: saxifrage

Saxifraga (noun)	genus Saxifraga (noun)
type genus of the Saxifragaceae; large genus of usually perennial herbs of Arctic and cool regions of Northern Hemisphere: saxifrage	type genus of the Saxifragaceae; large genus of usually perennial herbs of Arctic and cool regions of Northern Hemisphere: saxifrage