Division of guitars by material that are made

If we talk about the wood from which the body (corpus) of the instrument is made, we use the terms massive, semi-solid and plywood.

Solid (all-massive)

If we say that the guitar is a solid, it means that the whole body was made of one piece of wood.

Semi-solid (half-massive)

At least some part of the body (front plate, back plate, ...) was made of one piece of wood.

Plywood

Mostly several layers of wood (or laminate boards) are glued together.