Quark
Der Beste
Nouns or substansives. And LW is right, they must be written with Capitals, just like the polite Form of you (in Engl. You )
Das hatten Sie nicht gewusst, oder?
I think I'm going to do the same Thing in English. All Nouns with Capitals. It has a bit of a weird Look, but you'll all get used to it, some Day...