native sulphur vs brimstone

native sulphur and brimstone both are nouns.

Word	Noun	Adjective	Verb	Adverb
native sulphur	Yes	No	No	No
brimstone	Yes	No	No	No

As nouns, native sulphur and brimstone are synonyms defined as:

Other synonyms of native sulphur include native sulfur.

native sulphur (noun)	brimstone (noun)
an old name for sulfur	an old name for sulfur