Castanea pumila vs dwarf chestnut

Castanea pumila and dwarf chestnut both are nouns.

Word	Noun	Adjective	Verb	Adverb
Castanea pumila	Yes	No	No	No
dwarf chestnut	Yes	No	No	No

As nouns, Castanea pumila and dwarf chestnut are synonyms defined as:

Castanea pumila and dwarf chestnut: shrubby chestnut tree of southeastern United States having small edible nuts

Other synonyms of Castanea pumila include Allegheny chinkapin, chinquapin, eastern chinquapin.

Castanea pumila (noun)	dwarf chestnut (noun)
shrubby chestnut tree of southeastern United States having small edible nuts	shrubby chestnut tree of southeastern United States having small edible nuts