I am confused!

Hello!

I started doing Flash things a few time ago. I dont intend to use or pay for IDEs, so I used FlashDevelop and installed Flex Opensource SDK.
Now, I am doing a small game with actionscript… Am I using Flash or Flex?
I made an animation using Flash CSX demo, should I generate a .swf or .swc? (I want to load it in my game)

:look:

Thank you!