The .NET Framework consists of the common language runtime and the .NET Framework class library. The common language runtime is the foundation of the .NET Framework.
.Net is one of the Framework.it is common language runtime.
.NET is a Microsoft web services strategy to connect information, people, systems, and devices through software, making it easier for users to share and use their information between multiple websites, programs, and computers. Also, .NET is a programming model that enables software developers the ability to do rapid application development by bundling a collection of software in on package. For example, Microsoft Visual Studio .NET is part of the .NET programming model.
.net is a framework Developed by Microsoft It has some predefined classes
.net is a collection of programming language for developing distributed systems.
Better for you to Google it . you'll find a complete paragraph on it there. I don't used to remember useless things.