sulphide vs chemical compound

sulphide and chemical compound both are nouns.

Word	Noun	Adjective	Verb	Adverb
sulphide	Yes	No	No	No
chemical compound	Yes	No	No	No

As nouns, chemical compound is a hypernym of sulphide; that is, chemical compound is a word with a broader meaning than sulphide:

sulphide: a compound of sulphur and some other element that is more electropositive
chemical compound: (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

Other hypernyms of sulphide include compound.

sulphide (noun)	chemical compound (noun)
a compound of sulphur and some other element that is more electropositive	(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight