nationalistic vs flag-waving

nationalistic and flag-waving both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nationalistic	No	Yes	No	No
flag-waving	No	Yes	No	No

As adjectives, nationalistic and flag-waving are synonyms defined as:

Other synonyms of nationalistic include chauvinistic, jingoistic, superpatriotic, ultranationalistic.

nationalistic (adjective)	flag-waving (adjective)
devotion to the interests or culture of a particular nation including promoting the interests of one country over those of others	fanatically patriotic
fanatically patriotic