English sparrow vs true sparrow

English sparrow and true sparrow both are nouns.

Word	Noun	Adjective	Verb	Adverb
English sparrow	Yes	No	No	No
true sparrow	Yes	No	No	No

As nouns, true sparrow is a hypernym of English sparrow; that is, true sparrow is a word with a broader meaning than English sparrow:

English sparrow: small hardy brown-and-grey bird native to Europe
true sparrow: any of several small dull-colored singing birds feeding on seeds or insects

Other hypernyms of English sparrow include sparrow.

English sparrow (noun)	true sparrow (noun)
small hardy brown-and-grey bird native to Europe	any of several small dull-colored singing birds feeding on seeds or insects