[Xbox 360] Difference between Glitchable and flashable?

I got my new xbox 360 slim and it is Corona and they say it is not glitchable
does it mean i can not play backed up games? Or i can still flash my drive and burn cds if i have a compatible dvd drive?
what is the difference between the two words?
Answer #1
You can’t reset glitch the CPU as of yet.
Flashable means you can flash its DVD drive with an iXtreme firmware by C4Eva.