Journal of E-Technology Saima Jabeen, Sajid Shah, Asma Latif 4 4 2013 http://www.dline.info/jet/fulltext/v4n3/4.pdf This paper presents a study on the disambiguated named entities and normalization in textual as well as in social context. Their mutual enforcement is also discussed that how effective they are for each other when used together. Recent approaches presented for NERD in short context especially in tweets are discussed. The knowledge of named entity recognition is utilized in our underdeveloped work of multi-document summarization. We assessed that Yago knowledgebased Aida service for NERD is far better so far by considering a number of reasons. Some preliminary results of our summarizer are also presented that shows the effectiveness of using named entities in text summarization.