Correlation among queries is an important factor to analyze as it may affect the results delivered by a search engine. In this paper, we analyze correlation among queries and how it affects the information retrieved from the Web. We analyze two types of queries: (i) queries with embedded semantics, and (ii) queries without any semantics. In our analysis, we consider parameters such as search latencies and search relevance. We focus on two major search portals that are mainly used by end users. Further, we discuss a unified criteria for comparison among the performance of the search engines.