Inertial reference frames: inertial reference frames in which Newton’s first law of motion applies, i.e. an object at rest remains at rest and an object in motion remains in motion unless acted upon by a net force. Inertial reference frames are either stationary or moving at a constant speed. Inertial reference frames, for example, or a train traveling at a constant speed.
Noninertial reference frames: A noninertial reference frame is one that is accelerating in a linear or rotational direction around some cheval. A rotating automobile at constant speed using noninertial reference frames.
Final Answer:
Hence, The term “inertial frame” refers to a reference that is affected by inertia and The term “non inertial frame” refers to a reference that is free of inertia.