It is usually "Wissen".
To the best of my knowledge, uur is not a German word.
The German word is Selbsterkenntnis and means realisation/knowledge of one's own limitations
knowledge - (das) Wissen
to my knowledge Morro is not a German word. It means a rocky outcropping usually around a body of water. Ingfried Morro, the famous German painter, his birth name was Henze. Morro isn't German.
Chre is not a German word
No, knowledge is not a compound word.
The German word for "Who" is "Wer".
The German word for their is "Ihre."
"mit" is the German word for "with".
The word FROM in German is von
The word for is in German - " ist "
The German word for he is er.