Sentence:  The identification of the basic unit of religious organization - the parish or <WSD>congregation</WSD> - with a residential area is self defeating in a modern metropolis , for it simply means the closing of an iron trap on the outreach of the Christian fellowship and the transmutation of mission to co-optation . 
Meaning of the word marked with <WSD> tags:  a group of people who adhere to a common faith and habitually attend a given church