jet plane vs fan-jet

jet plane and fan-jet both are nouns.

Word	Noun	Adjective	Verb	Adverb
jet plane	Yes	No	No	No
fan-jet	Yes	No	No	No

As nouns, fan-jet is a hyponym of jet plane; that is, fan-jet is a word with a more specific, narrower meaning than jet plane:

Other hyponyms of jet plane include fanjet, turbofan, turbojet, jetliner, jumbo jet, jumbojet, twinjet.

jet plane (noun)	fan-jet (noun)
an airplane powered by one or more jet engines	a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust
	an airplane propelled by a fanjet engine