Anarchy and Anarchism

'Anarchy', in common parlance, is synonymous with 'chaos'.  In contrast, 'Anarchism' is a doctrine the cardinal element of which is the thesis that self-determination is the best principle of social organization, with variations of the concept of 'best' the grounds of varieties of the doctrine.  In other words, anarchy is antithetical to Political Philosophy, while Anarchism, as the suffix suggests, is a special case of it.