Juglans regia vs English walnut

Juglans regia and English walnut both are nouns.

Word	Noun	Adjective	Verb	Adverb
Juglans regia	Yes	No	No	No
English walnut	Yes	No	No	No

As nouns, Juglans regia and English walnut are synonyms defined as:

Juglans regia and English walnut: Eurasian walnut valued for its large edible nut and its hard richly figured wood; widely cultivated

Other synonyms of Juglans regia include Circassian walnut, English walnut tree, Persian walnut.

Juglans regia (noun)	English walnut (noun)
Eurasian walnut valued for its large edible nut and its hard richly figured wood; widely cultivated	nut with a wrinkled two-lobed seed and hard but relatively thin shell; widely used in cooking
	Eurasian walnut valued for its large edible nut and its hard richly figured wood; widely cultivated