magnetic field vs force field

magnetic field and force field both are nouns.

Word	Noun	Adjective	Verb	Adverb
magnetic field	Yes	No	No	No
force field	Yes	No	No	No

As nouns, force field is a hypernym of magnetic field; that is, force field is a word with a broader meaning than magnetic field:

magnetic field: the lines of force surrounding a permanent magnet or a moving charged particle
force field: the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it

Other hypernyms of magnetic field include field, field of force.

magnetic field (noun)	force field (noun)
the lines of force surrounding a permanent magnet or a moving charged particle	the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it