What's the difference between someone blocking you on facebook or if their account is deactivated?

[Janice]

So I've been messaging with this girl on facebook and before I can see her profile and everything but then now when I went to go message her again, her picture is gone but her name is still there but not clickable and I can't search her in my search bar and i get this message at the bottom
"You cannot reply to this conversation. Either the recipient's account was disabled or its privacy settings don't allow replies."
So does this mean she blocked me or she just deactivated her account?

[abraXus]

if the message still shows her name, she deactivated her account, or facebook suspended it for some reason

if she blocked you, her name would be "Facebook User"

[Orlando]

one of the two she is blocking you for who knows what reason or she has stopped using that site. either way the only way you can find out for sure is to talk to her if you can .