What are matter waves ?

What are mechanical, electromagnetic and matter waves ? Give an example of each type.

Is there any difference between light waves and matter waves?

Which are will have, a higher velocity to produce matter waves of the same wavelength?

Out of electron and proton which one will have, a higher velocity to produce matter waves of the same wavelength ? Explain it.

Matter waves are:

Give the main points of distinction between electromagnetic waves and matter waves.

What is a particle or matter wave and how it is different from electro-megnetic wave?