rocket fuel vs rocket propellant

rocket fuel and rocket propellant both are nouns.

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

As nouns, rocket fuel and rocket propellant are synonyms defined as:

rocket fuel and rocket propellant: an explosive charge that propels a rocket

Other synonyms of rocket fuel include rocket propellent.

rocket fuel (noun)	rocket propellant (noun)
an explosive charge that propels a rocket	an explosive charge that propels a rocket