Field of force and Magnetic field

Field of force noun - The space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it.

Magnetic field and field of force are semantically related. In some cases you can replace phrase "Magnetic field" with "Field of force", this phrases are similar.

Magnetic field noun - The lines of force surrounding a permanent magnet or a moving charged particle.

Field of force and magnetic field are semantically related. You can use "Field of force" instead a noun phrase "Magnetic field".