vicereine vs viceroy

vicereine and viceroy both are nouns.

Word	Noun	Adjective	Verb	Adverb
vicereine	Yes	No	No	No
viceroy	Yes	No	No	No

As nouns, vicereine and viceroy are synonyms defined as:

vicereine and viceroy: governor of a country or province who rules as the representative of his or her king or sovereign

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