How to work with Hosted Dynamic CRM?

Hello,

I am working on MS Dynamic CRM Online.

In MS Dynamic CRM Online, I know following things. But in Hosted Dynamic CRM, I don't know about following things

1- Does Partner Hosted MS Dynamic CRM provide all functionality which provided by CRM Online?

2- Does Partner Hosted MS Dynamic CRM has same UI as MS Dynamic CRM Online?

3- In Partner Hosted MS Dynamic CRM, can I create Managed and Unmanaged package same as I can create MS Dynamic CRM Online?

4- In Partner Hosted MS Dynamic CRM, can I customize default functionality same as I can create MS Dynamic CRM Online?

All above questions are related to Microsoft Dynamic CRM 2016. As I am beginner, I don't know much about Partner Hosted Dynamic CRM. So, I don't know whether my questions are valid or not?

Please suggest.