English sparrow vs sparrow

English sparrow and sparrow both are nouns.

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

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

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

Other hypernyms of English sparrow include true sparrow.

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