B.C.
If you Google 'differences between facebook and twitter marketing' you'll get lots of answers.
Additional:
You know - if you want to ignore a great resource for finding information - you certainly can do so.
Much as I could and often do ignore posts that I have no interest in, you can also ignore answers you feel do not help you.
And I'll answer any post anyway I want to - following site rules more often than not - with nary a by-your-leave thank-you-very-much.
Asking tech/marketing questions here is a lot like using a hammer on a screw - it's not exactly the right tool for the right job.
But hey - hammer away - if that's what spins your prop.
Have a nice day!