calcium sulphate vs salt

calcium sulphate and salt both are nouns.

Word	Noun	Adjective	Verb	Adverb
calcium sulphate	Yes	No	No	No
salt	Yes	Yes	Yes	No

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

calcium sulphate: a white salt (CaSO4)
salt: a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)

calcium sulphate (noun)	salt (noun)
a white salt (CaSO4)	the taste experience when common salt is taken into the mouth
	white crystalline form of especially sodium chloride used to season and preserve food
	a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)

calcium sulphate (adjective)	salt (adjective)
	(of speech) painful or bitter