hairstreak vs hairstreak butterfly

hairstreak and hairstreak butterfly both are nouns.

Word	Noun	Adjective	Verb	Adverb
hairstreak	Yes	No	No	No
hairstreak butterfly	Yes	No	No	No

As nouns, hairstreak and hairstreak butterfly are synonyms defined as:

hairstreak and hairstreak butterfly: small butterflies having striped markings under the wings

hairstreak (noun)	hairstreak butterfly (noun)
small butterflies having striped markings under the wings	small butterflies having striped markings under the wings