demagog vs political leader

demagog and political leader both are nouns.

Word	Noun	Adjective	Verb	Adverb
demagog	Yes	No	No	No
political leader	Yes	No	No	No

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

demagog: a political leader who seeks support by appealing to popular passions and prejudices
political leader: a person active in party politics

Other hypernyms of demagog include pol, politician, politico.

demagog (noun)	political leader (noun)
a political leader who seeks support by appealing to popular passions and prejudices	a person active in party politics