turbo-propeller plane vs propjet

turbo-propeller plane and propjet both are nouns.

Word	Noun	Adjective	Verb	Adverb
turbo-propeller plane	Yes	No	No	No
propjet	Yes	No	No	No

As nouns, turbo-propeller plane and propjet are synonyms defined as:

turbo-propeller plane and propjet: an airplane with an external propeller that is driven by a turbojet engine

Other synonyms of turbo-propeller plane include turboprop.

turbo-propeller plane (noun)	propjet (noun)
an airplane with an external propeller that is driven by a turbojet engine	an airplane with an external propeller that is driven by a turbojet engine