government activity vs governance

government activity and governance both are nouns.

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

As nouns, government activity and governance are synonyms defined as:

government activity and governance: the act of governing; exercising authority

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

government activity (noun)	governance (noun)
the act of governing; exercising authority	the act of governing; exercising authority
	the persons (or committees or departments etc.) who make up a body for the purpose of administering something