Wireframe, Mock ups and Prototyping Websites Discuss about wireframes, mockups and prototypes (low-fidelity prototypes and high-fidelity prototypes): what

Wireframe, Mock ups and Prototyping Websites Discuss about wireframes, mockups and prototypes (low-fidelity prototypes and high-fidelity prototypes): what are they? Compare them. Propose any eventual tools (software tools or other) for each item.(Please avoid pilgrisms )