Kidney failure and Renal disorder

Kidney failure noun - Inability of the kidneys to excrete wastes and to help maintain the electrolyte balance.

Renal disorder and kidney failure are semantically related. In some cases you can use "Renal disorder" instead a noun phrase "Kidney failure".

Renal disorder noun - A disease affecting the kidneys.

Kidney failure and renal disorder are semantically related. Sometimes you can replace phrase "Kidney failure" with "Renal disorder", this phrases are similar.