Compact disk and Demo

Compact disk noun - A digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser.

Demo and compact disk are semantically related. In some cases you can use "Demo" instead a noun phrase "Compact disk".

Demo noun - A mass meeting for the purpose of displaying or arousing support for a cause or person.

Compact disk and demo are semantically related. You can use "Compact disk" instead a noun "Demo".