Indian rhubarb vs red-veined pie plant

Indian rhubarb and red-veined pie plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indian rhubarb	Yes	No	No	No
red-veined pie plant	Yes	No	No	No

As nouns, Indian rhubarb and red-veined pie plant are synonyms defined as:

Other synonyms of Indian rhubarb include Himalayan rhubarb, Rheum australe, Rheum emodi.

Indian rhubarb (noun)	red-veined pie plant (noun)
rhizomatous perennial herb with large dramatic peltate leaves and white to bright pink flowers in round heads on leafless stems; colonizes stream banks in the Sierra Nevada in California	Asian herb (Himalayas)
Asian herb (Himalayas)