closed captioning A service or feature that renders the audio content of a television or video program as text on the screen. These captions are usually visible only if decoded or activated(CC)
subtitle(Dialog from film or video displayed on the screen (usually at the bottom) and typically used to provide translation from a foreign langauge); caption(Descriptive text that represents the audio content of a television or video program as text on the screen. Captions are usually visible only if decoded or activated)
