hippie vs flower child

hippie and flower child both are nouns.

Word	Noun	Adjective	Verb	Adverb
hippie	Yes	No	No	No
flower child	Yes	No	No	No

As nouns, hippie and flower child are synonyms defined as:

hippie and flower child: someone who rejects the established culture; advocates extreme liberalism in politics and lifestyle

Other synonyms of hippie include hippy, hipster.

hippie (noun)	flower child (noun)
someone who rejects the established culture; advocates extreme liberalism in politics and lifestyle	someone who rejects the established culture; advocates extreme liberalism in politics and lifestyle