Alleghany plum vs Prunus alleghaniensis

Alleghany plum and Prunus alleghaniensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alleghany plum	Yes	No	No	No
Prunus alleghaniensis	Yes	No	No	No

As nouns, Alleghany plum and Prunus alleghaniensis are synonyms defined as:

Alleghany plum and Prunus alleghaniensis: wild plum of northeastern United States having dark purple fruits with yellow flesh

Other synonyms of Alleghany plum include Allegheny plum, sloe.

Alleghany plum (noun)	Prunus alleghaniensis (noun)
wild plum of northeastern United States having dark purple fruits with yellow flesh	wild plum of northeastern United States having dark purple fruits with yellow flesh