All creative work that is available to the public with no exclusive intellectual property rights applied on the work. Anyone can use it, without permission and for any purpose.
Works in PD include
- works that are out of copyright
- works that were made before copyright
- works whose copyright term has expired
Public Domain Mark (PDM)
is a symbol used to indicate that a work is free of known copyright restrictions and therefore in the public domain U+1F16E
proposed by Creative Commons