There is nothing extraordinary about that - it seems that most larger galaxies have a black hole in their center. And I don't think there is a special name for that. If the galaxy emits certain radiations (as a result of the black hole), it is called an "active galaxy".
black hole got it's name because when look at a black hole, you only see black. also if you drop an item in the black hole the item is gone because there is a hole in there. so that's how black hole get's its name