chalcanthite vs blue copperas

chalcanthite and blue copperas both are nouns.

Word	Noun	Adjective	Verb	Adverb
chalcanthite	Yes	No	No	No
blue copperas	Yes	No	No	No

As nouns, chalcanthite and blue copperas are synonyms defined as:

chalcanthite and blue copperas: hydrated blue crystalline form of copper sulfate

Other synonyms of chalcanthite include blue stone, blue vitriol.

chalcanthite (noun)	blue copperas (noun)
hydrated blue crystalline form of copper sulfate	hydrated blue crystalline form of copper sulfate