government vs governance

government and governance both are nouns.

Word	Noun	Adjective	Verb	Adverb
government	Yes	No	No	No
governance	Yes	No	No	No

As nouns, government and governance are synonyms defined as:

Other synonyms of government include administration, governing, government activity.

government (noun)	governance (noun)
the act of governing; exercising authority	the act of governing; exercising authority
(government) the system or form by which a community or other political unit is governed	the persons (or committees or departments etc.) who make up a body for the purpose of administering something
the study of government of states and other political units
the organization that is the governing authority of a political unit