Armoured vehicle and Self-propelled vehicle

Armoured vehicle noun - A vehicle that is protected by armor plate.

Self-propelled vehicle and armoured vehicle are semantically related. In some cases you can use "Self-propelled vehicle" instead a noun phrase "Armoured vehicle".

Self-propelled vehicle noun - A wheeled vehicle that carries in itself a means of propulsion.

Armoured vehicle and self-propelled vehicle are semantically related. Sometimes you can replace phrase "Armoured vehicle" with "Self-propelled vehicle", this phrases are similar.