governance vs political science

governance and political science both are nouns.

Word	Noun	Adjective	Verb	Adverb
governance	Yes	No	No	No
political science	Yes	No	No	No

governance (noun)	political science (noun)
the act of governing; exercising authority	the study of government of states and other political units
the persons (or committees or departments etc.) who make up a body for the purpose of administering something