Conventional keyboards you can purchase at any nearby shops are inexpensive rubber dome keyboards that flooded the keyboard market. Rubber dome keyboards represent over 90% of keyboards in use today and provide an inexpensive but dissatisfying feel and typing experience. They have a large sheet of rubber dome with individual springs underneath of each keys.
A mechanical keyboard has individual mechanical switches under each key. It normally provides faster key strokes and more accurate typing experience. But mainly using mechanical keyboards are for the sensation on your fingers. It has many different types of type “feelings” that you can choose from. So you can find perfect fitting keyboard for your personal preference.