coffee rose vs shrub

coffee rose and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
coffee rose	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of coffee rose; that is, shrub is a word with a broader meaning than coffee rose:

coffee rose: tropical shrub having glossy foliage and fragrant nocturnal flowers with crimped or wavy corollas; northern India to Thailand
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of coffee rose include bush.

coffee rose (noun)	shrub (noun)
tropical shrub having glossy foliage and fragrant nocturnal flowers with crimped or wavy corollas; northern India to Thailand	a low woody perennial plant usually having several major stems