The job of sports journalist is to write about sports, players, teams and events and interview the players. They also host sports program on Television and radio. Sports journalist writes for newspapers, magazines, radio, sports websites and TV.
The job of a Video Jockey or VJ is to host a music show on television. It includes announcing the viewers about the upcoming music video and other details about it like singer, lyricist, album/band/movie name etc.
Radio Jockey or RJ, is the person whose job is to host a radio show. RJ job includes playing music, interviewing celebrities, Reading news etc. Radio is a fast growing industry in India, if you have a passion for music, then this is for you.