The term "normal magnetic field" is often used in physics and engineering to refer to the magnetic field that is perpendicular to the surface of an object or plane. There are several synonyms that can effectively convey the same meaning, including axial magnetic field, transverse magnetic field, perpendicular magnetic field, and orthogonal magnetic field. These terms all refer to a magnetic field that is oriented at a right angle to the surface of an object or plane, and are often used interchangeably in scientific literature. When discussing magnetic fields in a particular context, it is important to use the terminology that is most commonly used and understood by others in the field.