Possession is having some degree of control over something else. A person may be in possession of some property (although possession does not always imply ownership); a spirit may be in possession of a person. Like ownership, the possession of things is commonly regulated by states (see law). Languages indicate possession via the possessive case.
Specific meanings:
A material possession is any item or property owned by a person or group. Wealth is a measure of a person's material possessions.
A political possession is another word for a dependent area or a colony; that is, a territory under the control and protection of a larger country, but which is not considered part of that country. For example, Guam is a possession of the United States.
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