They both use electromagnetism.
No. An electromagnetic wave IS electric and magnetic fields.
The letters in electromagnetic refer to the two fundamental components: "electro" stands for electric field and "magnetic" stands for magnetic field. These fields interact with each other to propagate energy and information through space in the form of electromagnetic waves.
Electric field and magnetic field
An electromagnetic wave, in its simplest description, is a wave that as it propagates keeps converting its magnetic field into an electric field while converting its electric field into a magnetic field.
Moving electric charges will interact with an electric field. Moving electric charges will also interact with a magnetic field.
Part of the electromagnetic spectrum can be detected by eye, and we call that bit "light". The thing about electromagnetic radiation is that a varying magnetic field causes a (varying) electric field (that's how power stations make electric current) and a varying electric field causes a (varying) magnetic field. So electromagnetic radiation is what you get when a varying electric field creates a varying magnetic field which in turn contributes the varying electric field. The whole thing then appears as bundled varying electric and magnetic field wave system which propagates at the velocity of light, That is why it is called electromagnetic. There are no magnetic poles or electric charges in it, and it can travel through a vacuum.
The changing electric field will produce a magnetic field; the changing magnetic field will cause an electric field; both will propagate as a wave - an electro-magnetic wave.
Electromagnetic waves are transverse (unpolarized or polarized) or circularly polarized waves that have some electrical properties and some magnetic properties. An electromagnetic wave consists of changing electric and magnetic fields. The repeated cyclic transfer of energy from the electric field (weakening it) to the magnetic field (strengthening it) until the electric field is gone, then from the magnetic field (weakening it) to the electric field (strengthening it) until the magnetic field is gone every cycle is the process by which electromagnetic waves propagate without requiring a medium (and is described in Maxwell's Equations).
they both have a Electromagnetic wave.
when a charge oscillates for example in a capacitor it produce an electric field; which in turns produce a magnetic field in an inductance. the magnetic field oscillates perpendicular to the electric field and an electromagnetic waves perpendicular to both is produced.
electromagnetic
No electromagnetic radiation, whether ionizing or not, is affected by an electric field or by a magnetic field.