Sentence:  The Venetian <WSD>ghetto</WSD>, according to Sennett, was to provide protection from the unclean bodies of the Jews and their sullying touch. The Roman <WSD>ghetto</WSD>, on the other hand, was planned as an area for mission. It was supposed to collect the Jews in one place, so that it would be easier to convert them. 
Meaning of the word marked with <WSD> tags:  An (often walled) area of a city in which Jews are concentrated by force and law. (Used particularly of areas in medieval Italy and in Nazi-controlled Europe.)