This question already has an answer here:

Ich habe keinen Wein.
* Ich habe nicht Wein.

Why is the former correct but in the following it’s the other way round?

Ich verstehe nicht.
* Ich verstehe kein.

marked as duplicate by Wrzlprmft, Ingmar, c.p., Community May 26 '15 at 8:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • You may in particular want to take a look at this answer. – Wrzlprmft May 26 '15 at 8:37
  • ask new question more precisely if not duplicated, thanks – HolgT May 27 '15 at 9:19