Castanea sativa vs sweet chestnut

Castanea sativa and sweet chestnut both are nouns.

Word	Noun	Adjective	Verb	Adverb
Castanea sativa	Yes	No	No	No
sweet chestnut	Yes	No	No	No

As nouns, Castanea sativa and sweet chestnut are synonyms defined as:

Castanea sativa and sweet chestnut: wild or cultivated throughout southern Europe, northwestern Africa and southwestern Asia

Other synonyms of Castanea sativa include European chestnut, Spanish chestnut.

Castanea sativa (noun)	sweet chestnut (noun)
wild or cultivated throughout southern Europe, northwestern Africa and southwestern Asia	wild or cultivated throughout southern Europe, northwestern Africa and southwestern Asia