natal plum vs Carissa macrocarpa

natal plum and Carissa macrocarpa both are nouns.

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

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

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

Other synonyms of natal plum include amatungulu, Carissa grandiflora.

natal plum (noun)	Carissa macrocarpa (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