The document defines key terms related to stock exchanges and the process of dematerialization. It explains that a stock exchange is a platform for trading financial instruments and connecting buyers and sellers. Companies must meet listing requirements to trade on an exchange. It also outlines the purpose of exchanges is to raise capital and promote good governance. Additionally, it defines that a depository holds financial securities electronically and a depository participant acts as an intermediary between investors and the depository. The process of dematerialization involves opening a demat account and converting physical shares into electronic form by submitting share certificates to the depository participant.