the use of real life objects on a computer or the internet (web) to represent the real life counterpart (natural user interface). using a realistic icon, symbol or image as a placeholder for a real life object on a computer or the internet rather than a word.
the use of an envelope icon to represent the action of writing and mailing a text message or email is biorealism.
the use of a head shot (as on friskyhands.com) rather than a simple boarder less picture is biorealism.
the use of an index card (as on positivelyfrisky.com) rather than a plain white box is biorealism.