.NET is a framework. C# is language. .NET will give you stuff like IO, collections, stuff (FCL) who will run into a VM (security, memory management, etc (CLR).

.NET is a framework. C# is language. .NET will give you stuff like IO, collections, stuff (FCL) who will run into a VM (security, memory management, etc (CLR). [You can use .NET with Ruby in fact][1]. [1]: http://ironruby.net/ http://ironruby.net/