European chestnut vs sweet chestnut

European chestnut and sweet chestnut both are nouns.

Word	Noun	Adjective	Verb	Adverb
European chestnut	Yes	No	No	No
sweet chestnut	Yes	No	No	No

As nouns, European chestnut and sweet chestnut are synonyms defined as:

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

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

European chestnut (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