Rocket engine and Reaction engine

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

Reaction engine and rocket engine are semantically related. in jet engine with reaction propulsion topic. In some cases you can use "Reaction engine" instead a noun phrase "Rocket engine".

Reaction engine noun - A jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream.

Rocket engine and reaction engine are semantically related. Sometimes you can replace phrase "Rocket engine" with "Reaction engine", this phrases are similar.