Iconography is the use of images and symbols to portray a subject, movement or ideal. It can also be the use of certain symbols that convey certain genres such as religious iconography, iconography in art and iconography in film and television.
Here are examples of religious iconography:
Here are examples of iconography in art including cultural arts:
Iconography provides a shortcut way to communicate. Over time an icon can become an easy way to describe a large idea in a very abbreviated way.