Multiple modules in an application maybe?

Question

Angular

In general, I'm learning Angular and have some questions about modules.

1. Do I understand correctly that 1 application is 1 module?
   
2. Can multiple modules be used in one application? If yes, what is the purpose of doing so?
   

Answer 1

As many modules as you want.
A module is a frame structure on which components, services, and so on are attached. As a rule, one functional unit is a module.
For example, some complex element is made from several components and a couple of services and imported by the module.
Or another example - a lazy loading module, a page or several, loaded only when needed.