government activity vs government

government activity and government both are nouns.

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

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

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

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

government activity (noun)	government (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 study of government of states and other political units
	the organization that is the governing authority of a political unit