The term 'cassette contents' refers to the items that can be found inside a cassette. This includes a VIDEO, which is a five-letter word, an AUDIOTAPE, which is a nine-letter word, and a TAPE, which is a four-letter word. Videos are usually visual recordings, such as movies or television shows, while audiotapes are audio recordings, such as music or spoken words. Tapes are generally used for recording audio or VIDEO, but can also be used for other purposes.