hegemony vs political system

hegemony and political system both are nouns.

Word	Noun	Adjective	Verb	Adverb
hegemony	Yes	No	No	No
political system	Yes	No	No	No

As nouns, political system is a hypernym of hegemony; that is, political system is a word with a broader meaning than hegemony:

hegemony: the dominance or leadership of one social group or nation over others
political system: the members of a social organization who are in power

Other hypernyms of hegemony include form of government.

hegemony (noun)	political system (noun)
the dominance or leadership of one social group or nation over others	the members of a social organization who are in power