dwarf chestnut vs Castanea pumila

dwarf chestnut and Castanea pumila both are nouns.

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

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

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

Other synonyms of dwarf chestnut include Allegheny chinkapin, chinquapin, eastern chinquapin.

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