In terminology, let's look at the top navigation bar at the website to see where we are:
Dynamics 365: We are in a Dynamics 365 application
Fundraising: This is just an entity name which has been created by your developers
Dashboards: This is the home page of most entities
You are using Dynamics 365 for Customer Engagement, so my above links are valid for learning about that product. 'Fundraising' just means that you are in an area of the application which your developers devoted to websites