Active Directory Authentication and asp.NET identity

Question

Hi I want fair opinion I am creating an application in which I am going to use Active directory authentication for users .
My First question is Does Windows Authentication & Active Directory Authentication is same If yes than While creating new project we have an option for authentication like to user Work or school email what is that while creating MVC project in visual studion
MY SECOND QUESTION is If i am using Active Directory Authentication than how I can use ASP.NET identity for Roles management as Identity requires User account creation which it saved in aspnetUser table which is generated for identity , but with Active directory authentication I do not need to create new user account and to put them in aspnetuser table so how identity we can use with active directory authentication if identity is not suitable than what else options are present to use.