ammonium nitrate vs nitrate

ammonium nitrate and nitrate both are nouns.

Word	Noun	Adjective	Verb	Adverb
ammonium nitrate	Yes	No	No	No
nitrate	Yes	No	Yes	No

As nouns, nitrate is a hypernym of ammonium nitrate; that is, nitrate is a word with a broader meaning than ammonium nitrate:

ammonium nitrate: used as an explosive and fertilizer and rocket propellant
nitrate: any compound containing the nitrate group (such as a salt or ester of nitric acid)

Other hypernyms of ammonium nitrate include ammonium salt.

ammonium nitrate (noun)	nitrate (noun)
used as an explosive and fertilizer and rocket propellant	any compound containing the nitrate group (such as a salt or ester of nitric acid)

ammonium nitrate (verb)	nitrate (verb)
	treat with nitric acid, so as to change an organic compound into a nitrate