Sentence:  Despite some contradictions found in the essay, its major emphasis is laid on the politics-administration <WSD>dichotomy</WSD> theory. It is largely devoted to the argument concerning the separability of politics and administration. The politics-administration <WSD>dichotomy</WSD> initiated by Wilson was later elaborated by Frank J. Goodnow in his work, “Politics and Administration” (1900). 
Meaning of the word marked with <WSD> tags:  A separation or division into two; a distinction that results in such a division.