banded purple vs white admiral

banded purple and white admiral both are nouns.

Word	Noun	Adjective	Verb	Adverb
banded purple	Yes	No	No	No
white admiral	Yes	No	No	No

As nouns, banded purple and white admiral are synonyms defined as:

banded purple and white admiral: North American butterfly with blue-black wings crossed by a broad white band

Other synonyms of banded purple include Limenitis arthemis.

banded purple (noun)	white admiral (noun)
North American butterfly with blue-black wings crossed by a broad white band	Eurasian butterfly with brown wings and white markings
	North American butterfly with blue-black wings crossed by a broad white band