Confusion regarding Frappe Insights

What components of Frappe Insights are common with Frappe Framework? In the framework we have dashboard functionalities part of core framework itself, how do those differ from functionalities of insights?
I just want to understand the difference between core framework dashboard and frappe insights.

Frappe Insights is a custom UI built on top of the Frappe Framework. It does not use the framework’s dashboard components.
To build a framework’s dashboard, you must write code, which Frappe Insights is trying to eliminate. With Frappe Insights, you can create dashboards without writing any code.