house sparrow vs Passer domesticus

house sparrow and Passer domesticus both are nouns.

Word	Noun	Adjective	Verb	Adverb
house sparrow	Yes	No	No	No
Passer domesticus	Yes	No	No	No

As nouns, house sparrow and Passer domesticus are synonyms defined as:

house sparrow and Passer domesticus: small hardy brown-and-grey bird native to Europe

Other synonyms of house sparrow include English sparrow.

house sparrow (noun)	Passer domesticus (noun)
small hardy brown-and-grey bird native to Europe	small hardy brown-and-grey bird native to Europe