This document discusses the different types of central excise duties in India. It outlines five main types: basic excise duty, special excise duty, additional excise duty, cess, and national calamity contingent duty. For each type, it provides a brief description of what it is and how it is applied. It also discusses some key aspects of excisable goods, including what qualifies as goods for excise duty purposes, the distinction between excisable and non-excisable goods, and different categories of dutiable, non-dutiable, exempted, and nil-rated goods.