gas-turbine ship vs gas turbine

gas-turbine ship and gas turbine both are nouns.

Word	Noun	Adjective	Verb	Adverb
gas-turbine ship	Yes	No	No	No
gas turbine	Yes	No	No	No

gas-turbine ship (noun)	gas turbine (noun)
a ship powered by a gas turbine	turbine that converts the chemical energy of a liquid fuel into mechanical energy by internal combustion; gaseous products of the fuel (which is burned in compressed air) are expanded through a turbine