Organization

Organization (or organisation) is a broad topic requiring knowledge and insight to summarize. A useful start to this topic might be to find the book _Organizations_ by Richard Scott:

http://www.amazon.com/exec/obidos/ASIN/0132663546 (not a recommendation, but a hearsay suggestion)

Organisations which are legal entities: government, international organization, [nongovernmental organization]? , [armed forces]?, company.

Related concepts include bureaucracy, organized crime.