turbofan engine vs fan-jet

turbofan engine and fan-jet both are nouns.

Word	Noun	Adjective	Verb	Adverb
turbofan engine	Yes	No	No	No
fan-jet	Yes	No	No	No

As nouns, turbofan engine and fan-jet are synonyms defined as:

turbofan engine and fan-jet: a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust

Other synonyms of turbofan engine include fanjet, fanjet engine, turbofan, turbojet, turbojet engine.

turbofan engine (noun)	fan-jet (noun)
a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust	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