+**Public Domain** refers to works whose [Intellectual Property](/wiki/intellectual_property) rights have expired, been forfeited, or are inapplicable, meaning no one exclusively owns them. These creations – from books and music to inventions – are free for anyone to use, share, and build upon without seeking permission or paying [Copyright](/wiki/copyright) fees. It is a vast reservoir of shared human heritage, fostering new creativity and knowledge.
+## See also
+- [Copyright Law](/wiki/copyright_law)
+- [Fair Use](/wiki/fair_use)
+- [Open Source](/wiki/open_source)
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