libber vs reformer

libber and reformer both are nouns.

Word	Noun	Adjective	Verb	Adverb
libber	Yes	No	No	No
reformer	Yes	No	No	No

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

Other hypernyms of libber include crusader, meliorist, reformist, social reformer.

libber (noun)	reformer (noun)
a supporter of feminism	an apparatus that reforms the molecular structure of hydrocarbons to produce richer fuel
	a disputant who advocates reform