Appropriation is the act of taking possession of or assigning purpose to properties or ideas and is important in many topics, including:

• Appropriation (sociology) in relation to the spread of knowledge
• Appropriation (art)
  • Appropriation (visual art) ^*
  • Appropriation (music) in reference to the re-use and proliferation of different types of music
• Appropriation (law) as a component of government spending
• Appropriation (Catholicism) ^*
• Cultural appropriation is the borrowing, or theft, of an element of cultural expression of one group by another.
• The tort of appropriation is one form of invasion of privacy.