geopolitics vs government

geopolitics and government both are nouns.

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

As nouns, government is a hypernym of geopolitics; that is, government is a word with a broader meaning than geopolitics:

geopolitics: the study of the effects of economic geography on the powers of the state
government: the study of government of states and other political units

Other hypernyms of geopolitics include political science, politics.

geopolitics (noun)	government (noun)
the study of the effects of economic geography on the powers of the state	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