date palm vs Phoenix dactylifera

date palm and Phoenix dactylifera both are nouns.

Word	Noun	Adjective	Verb	Adverb
date palm	Yes	No	No	No
Phoenix dactylifera	Yes	No	No	No

As nouns, date palm and Phoenix dactylifera are synonyms defined as:

date palm and Phoenix dactylifera: tall tropical feather palm tree native to Syria bearing sweet edible fruit

date palm (noun)	Phoenix dactylifera (noun)
tall tropical feather palm tree native to Syria bearing sweet edible fruit	tall tropical feather palm tree native to Syria bearing sweet edible fruit