Normal crypto is a code-based resource built to be used as an item of exchange. Additional units may be added by mining. Any person can do this if they have a a computer. Mining requires a great deal of time and electrical energy, however. A high-powered machine is also required, to mine effectively. However, Ripple is a centralised resource, which can't be mined. A finite number of units were created by the organisation and this amount will not be added to.