flag-waver vs nationalist

flag-waver and nationalist both are nouns.

Word	Noun	Adjective	Verb	Adverb
flag-waver	Yes	No	No	No
nationalist	Yes	Yes	No	No

As nouns, nationalist is a hypernym of flag-waver; that is, nationalist is a word with a broader meaning than flag-waver:

Other hypernyms of flag-waver include patriot.

flag-waver (noun)	nationalist (noun)
an extreme bellicose nationalist	one who loves and defends his or her country
	an advocate of national independence of or a strong national government

flag-waver (adjective)	nationalist (adjective)
	devotion to the interests or culture of a particular nation including promoting the interests of one country over those of others