blue copperas vs chalcanthite

blue copperas and chalcanthite both are nouns.

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

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

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

Other synonyms of blue copperas include blue stone, blue vitriol.

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