natal plum vs Carissa grandiflora

natal plum and Carissa grandiflora both are nouns.

Word	Noun	Adjective	Verb	Adverb
natal plum	Yes	No	No	No
Carissa grandiflora	Yes	No	No	No

As nouns, natal plum and Carissa grandiflora are synonyms defined as:

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

Other synonyms of natal plum include amatungulu, Carissa macrocarpa.

natal plum (noun)	Carissa grandiflora (noun)
edible scarlet plumlike fruit of a South African plant	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
South African shrub having forked spines and plumlike fruit; frequently used as hedging