Explosive charge and Rocket propellant

Explosive charge noun - A quantity of explosive to be set off at one time.

Rocket propellant and explosive charge are semantically related. In some cases you can replace phrase "Rocket propellant" with "Explosive charge", this phrases are similar.

Rocket propellant noun - An explosive charge that propels a rocket.

Explosive charge and rocket propellant are semantically related. You can use "Explosive charge" instead a noun phrase "Rocket propellant".