Myth
Myths are generally very old. This means there are no records or other proof that they happened. We know about them from older people telling them to younger people. Some myths may have started as 'true' stories but as people told and re-told them, they may have changed some parts, so they are less 'true'. They may have changed them by mistake, or to make them more interesting. All cultures have myths. Stories about the Greek and Roman gods and goddesses are myths.