demonstrator vs social reformer

demonstrator and social reformer both are nouns.

Word	Noun	Adjective	Verb	Adverb
demonstrator	Yes	No	No	No
social reformer	Yes	No	No	No

As nouns, social reformer is a hypernym of demonstrator; that is, social reformer is a word with a broader meaning than demonstrator:

Other hypernyms of demonstrator include crusader, meliorist, reformer, reformist.

demonstrator (noun)	social reformer (noun)
someone who participates in a public display of group feeling	a disputant who advocates reform
someone who demonstrates an article to a prospective buyer
a teacher or teacher's assistant who demonstrates the principles that are being taught