Nice table summarizing the different keywords and features by language.

VB, VJ#, C++, C#, JScript, Visual FoxPro.
Things like base, sealed, this, abstract, Shadowing, delegate, etc.

Can't tell the timeframe of this list - shows C# as "New", as well as many of the VB keywords. Seems like it's probably from the early days of .NET

Language Equivalents