natal plum vs natal plum

natal plum and natal plum both are nouns.

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

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