Jet and Rocket engine

Jet noun - A usually forceful stream of fluid discharged from a narrow opening.

Rocket engine and jet are semantically related in projectile topic. In some cases you can use "Rocket engine" instead a noun "Jet".

Rocket engine noun - A jet engine containing its own propellant and driven by reaction propulsion.

Jet and rocket engine are semantically related in projectile topic. You can use "Jet" instead a noun phrase "Rocket engine".