Is APEX similar to C#?

I understand that APEX and C# are both programming languages, but I'm wondering if there are any significant similarities between the two? Specifically, are the syntaxes comparable, or do they differ greatly? Additionally, are there any key features of APEX that are absent in C#, or vice versa? I'm trying to get a better understanding of how these two languages compare and contrast, so any insights you can provide would be greatly appreciated.