Solid state and Solid-state

Solid state noun - The state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape.

Solid-state and solid state are semantically related. In some cases you can replace phrase "Solid-state" with "Solid state", this phrases are similar.

Solid-state adjective - Consisting of semiconductor materials and components and related devices.

Solid state and solid-state are semantically related. You can use "Solid state" instead a noun phrase "Solid-state".