Voiceover is a term commonly used in film production, advertising, and broadcasting. It refers to a process where a voice is recorded and overlaid on a video or audio clip. However, there are various synonyms for this term depending on the context. In advertising, it's often referred to as "voice acting," "voice work," or "voice production." In film, it could be called "narration," "spoken commentary," or "off-screen voice." In broadcasting, it may also be known as "announcing," "reading," or "voice reading." While they may have different names, these synonyms all refer to the same process of adding a voice track to a media clip.