demagogy vs flag waving

demagogy and flag waving both are nouns.

Word	Noun	Adjective	Verb	Adverb
demagogy	Yes	No	No	No
flag waving	Yes	No	No	No

As nouns, flag waving is a hyponym of demagogy; that is, flag waving is a word with a more specific, narrower meaning than demagogy:

demagogy: impassioned appeals to the prejudices and emotions of the populace
flag waving: an appeal intended to arouse patriotic emotions

Other hyponyms of demagogy include jingoism.

demagogy (noun)	flag waving (noun)
impassioned appeals to the prejudices and emotions of the populace	an appeal intended to arouse patriotic emotions