niter vs potassium nitrate

niter and potassium nitrate both are nouns.

Word	Noun	Adjective	Verb	Adverb
niter	Yes	No	No	No
potassium nitrate	Yes	No	No	No

As nouns, niter and potassium nitrate are synonyms defined as:

niter and potassium nitrate: (KNO3) used especially as a fertilizer and explosive

Other synonyms of niter include nitre, saltpeter, saltpetre.

niter (noun)	potassium nitrate (noun)
(KNO3) used especially as a fertilizer and explosive	(KNO3) used especially as a fertilizer and explosive