Spanish chestnut vs sweet chestnut

Spanish chestnut and sweet chestnut both are nouns.

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

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

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

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

Spanish 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