common bird cherry vs Prunus padus

common bird cherry and Prunus padus both are nouns.

Word	Noun	Adjective	Verb	Adverb
common bird cherry	Yes	No	No	No
Prunus padus	Yes	No	No	No

As nouns, common bird cherry and Prunus padus are synonyms defined as:

common bird cherry and Prunus padus: small European cherry tree closely resembling the American chokecherry

Other synonyms of common bird cherry include European bird cherry, hagberry tree.

common bird cherry (noun)	Prunus padus (noun)
small European cherry tree closely resembling the American chokecherry	small European cherry tree closely resembling the American chokecherry