sulphate vs salt

sulphate and salt both are nouns.

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

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

sulphate: a salt or ester of sulphuric acid
salt: a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)

sulphate (noun)	salt (noun)
a salt or ester of sulphuric acid	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)

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