rose vs banksia rose

rose and banksia rose both are nouns.

Word	Noun	Adjective	Verb	Adverb
rose	Yes	Yes	No	No
banksia rose	Yes	No	No	No

As nouns, banksia rose is a hyponym of rose; that is, banksia rose is a word with a more specific, narrower meaning than rose:

rose: any of many shrubs of the genus Rosa that bear roses
banksia rose: Chinese evergreen climbing rose with yellow or white single flowers

rose (noun)	banksia rose (noun)
a dusty pink color	Chinese evergreen climbing rose with yellow or white single flowers
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)	banksia rose (adjective)
of something having a dusty purplish pink color