Limenitis archippus vs viceroy

Limenitis archippus and viceroy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Limenitis archippus	Yes	No	No	No
viceroy	Yes	No	No	No

As nouns, Limenitis archippus and viceroy are synonyms defined as:

Limenitis archippus and viceroy: showy American butterfly resembling the monarch but smaller

Limenitis archippus (noun)	viceroy (noun)
showy American butterfly resembling the monarch but smaller	showy American butterfly resembling the monarch but smaller
	governor of a country or province who rules as the representative of his or her king or sovereign