rose vs genus Rosa

rose and genus Rosa both are nouns.

Word	Noun	Adjective	Verb	Adverb
rose	Yes	Yes	No	No
genus Rosa	Yes	No	No	No

rose (noun)	genus Rosa (noun)
a dusty pink color	large genus of erect or climbing prickly shrubs including roses
pinkish table wine from red grapes whose skins were removed after fermentation began
any of many shrubs of the genus Rosa that bear roses

rose (adjective)	genus Rosa (adjective)
of something having a dusty purplish pink color