Japanese rose vs Rosa multiflora

Japanese rose and Rosa multiflora both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japanese rose	Yes	No	No	No
Rosa multiflora	Yes	No	No	No

As nouns, Japanese rose and Rosa multiflora are synonyms defined as:

Japanese rose and Rosa multiflora: vigorously growing rose having clusters of numerous small flowers; used for hedges and as grafting stock

Other synonyms of Japanese rose include baby rose, multiflora, multiflora rose.

Japanese rose (noun)	Rosa multiflora (noun)
vigorously growing rose having clusters of numerous small flowers; used for hedges and as grafting stock	vigorously growing rose having clusters of numerous small flowers; used for hedges and as grafting stock