chalcanthite vs copper sulphate

chalcanthite and copper sulphate both are nouns.

Word	Noun	Adjective	Verb	Adverb
chalcanthite	Yes	No	No	No
copper sulphate	Yes	No	No	No

As nouns, copper sulphate is a hypernym of chalcanthite; that is, copper sulphate is a word with a broader meaning than chalcanthite:

chalcanthite: hydrated blue crystalline form of copper sulfate
copper sulphate: a copper salt made by the action of sulfuric acid on copper oxide

Other hypernyms of chalcanthite include copper sulfate, cupric sulfate, cupric sulphate.

chalcanthite (noun)	copper sulphate (noun)
hydrated blue crystalline form of copper sulfate	a copper salt made by the action of sulfuric acid on copper oxide