Carissa grandiflora vs Carissa macrocarpa

Carissa grandiflora and Carissa macrocarpa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carissa grandiflora	Yes	No	No	No
Carissa macrocarpa	Yes	No	No	No

As nouns, Carissa grandiflora and Carissa macrocarpa are synonyms defined as:

Carissa grandiflora and Carissa macrocarpa: very large closely branched South African shrub having forked bright green spines and shiny leaves

Other synonyms of Carissa grandiflora include amatungulu, natal plum.

Carissa grandiflora (noun)	Carissa macrocarpa (noun)
very large closely branched South African shrub having forked bright green spines and shiny leaves	very large closely branched South African shrub having forked bright green spines and shiny leaves