hippy vs crusader

hippy and crusader both are nouns.

Word	Noun	Adjective	Verb	Adverb
hippy	Yes	No	No	No
crusader	Yes	No	No	No

As nouns, crusader is a hypernym of hippy; that is, crusader is a word with a broader meaning than hippy:

hippy: someone who rejects the established culture; advocates extreme liberalism in politics and lifestyle
crusader: a disputant who advocates reform

Other hypernyms of hippy include meliorist, reformer, reformist, social reformer.

hippy (noun)	crusader (noun)
someone who rejects the established culture; advocates extreme liberalism in politics and lifestyle	a disputant who advocates reform