what is difference between permittivity and permeability?

Question

what is the difference between "electrical permittivity" and "magnetic permeability" ??

Answer 1

electrical permittivity means that whether the medium permits the electrical lines of force or not. and if it permits then till what extent it permits.
whereas permeability means that till what extent the medium allows magnetic lines of force to pass through that medium.

electrical lines of force can be stopped by just placing the object inside a hollow conductor, hence there may be no permittivity.
or there may be infinite permittivity too(that is in metals).

but no matter what we do, we cannot stop magnetic lines of force. hence, there is always some magnetic permeability.

Answer 2

permittivity and permeability are both properties of matter and space. Permittivity, designated by the symbol epsilon relates electric field intensity to electric charges (basically defining the magnitude of force between charges). Permeability relates magnetic field strength to electric current (moving charges). It is designated by the symbol mu. These parameters appear in maxwell's equations which define the nature of electric and magnetic fields and their interactions. In a vacuum, these are called epsilon sub zero and mu sub zero. maxwell's equations predict the interaction of electric and magnetic fields in the absence of physical charges, producing a wave equation in which these parameters appear. The wave is shown to have a velocity in a vacuum of 1/√[mu sub zero x epsilon sub zero], which equates to the speed of light in a vaccum.