More Definitions
Backing Beans - JavaBeans that are bound to the components.Beans can have different scopes. There can be some that exist as long as the application is running, some that last for one user's session, and some that last for one request cycle. Backing beans have properties, getters and setters and methods.
Binding to Data - Each JSF UI input or output components can be connected to specific property in a Backing Bean. JSF automatically calls the getters and setters at the appropriate time.
Binding to Methods - Commands and Links can be linked to methods in a similar fashion.