A theory or doctrine which supports a state of separation between organizations, institutions, or other societal groups (e.g. between church and state) or between different political jurisdictions (e.g. a country and its former colony).
The practice of treating members of different societal groups in a politically, legally, or economically different manner.
Support for the continuance of the United Kingdom (especially with respect to Northern Ireland).
The support of advocacy of a union, especially of a trade union.
Support for the North (the Union) during the American Civil War.