Basically Uri will will be used to fetch the information from the specified path. In that UriKind will decide whether the patch is Absolute or Relative.
Relative Uri : - This Uri will not be having the detailed information about the file path like.
/Images/Nature.png
Absolute Uri : - This Uri will give the detailed information about the file path from the foot itself.
D:/Projects/TestingApplication/Images/Nature.png
Relative Or Absolute : - This Uri might be Relative or Absolute that means Indeterminate