flag-waving vs nationalistic

flag-waving and nationalistic both are adjectives.

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

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

Other synonyms of flag-waving include chauvinistic, jingoistic, superpatriotic, ultranationalistic.

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