I’m studying for my Economics class and need an explanation.

Hello, I am looking for definitions and important information and also examples for each word of these:

1- Articles (Coase, chandler, Stigler, an and Williamson)

2- impact of infrastructure on firms, over time

3- Elasticity

4- economies of scale

5- economies of scope

6- market structure

7- game theory

8- Entry and Exit

9- strategic commitment

ALL THE INFORMATION MUST BE IN THE ECONOMIES FIELD