rocket propellant vs hydrazine

rocket propellant and hydrazine both are nouns.

Word	Noun	Adjective	Verb	Adverb
rocket propellant	Yes	No	No	No
hydrazine	Yes	No	No	No

rocket propellant (noun)	hydrazine (noun)
an explosive charge that propels a rocket	a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels