In thesociology of religionasectis generally a smallerreligiousorpoliticalgroup that has broken off from a larger group; for example from a large, well-established religious group, like adenomination, usually due to a dispute about doctrinal matters.In its historical usage inChristendomthe term has a pejorative connotation and refers to a movement committed tohereticalbeliefs and that often deviated from orthodox practices. --http://en.wikipedia.org/wiki/Sect
Pages on this website that describe sects fall under this heading.