Sastra is a Sanskrit term used to denote rules in a general sense. The word is generally used as a suffix in the context of technical or specialized knowledge in a defined area of practice.
There are many types of Sastras (We will update this list as we learn about it)
01. Bhautika Shastra (Physics) 02. Rasayana Shastra (Chemistry) 03. Jeeva Shastra (Biology) 04. Vaastu Shastra (Architectural Science) 05. Shilpa Shastra (Science of Sculpture) 06. Artha Shastra (Economics) 07. Neeti Shastra (Political Science) 08. Tarka shastra (Debate)