viceroy vs governor

viceroy and governor both are nouns.

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

As nouns, governor is a hypernym of viceroy; that is, governor is a word with a broader meaning than viceroy:

viceroy: governor of a country or province who rules as the representative of his or her king or sovereign
governor: the head of a state government

viceroy (noun)	governor (noun)
showy American butterfly resembling the monarch but smaller	a control that maintains a steady speed in a machine (as by controlling the supply of fuel)
governor of a country or province who rules as the representative of his or her king or sovereign	the head of a state government