English walnut tree vs English walnut

English walnut tree and English walnut both are nouns.

Word	Noun	Adjective	Verb	Adverb
English walnut tree	Yes	No	No	No
English walnut	Yes	No	No	No

As nouns, English walnut tree and English walnut are synonyms defined as:

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

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

English walnut tree (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