No the Cortex is the outer layer of a internal organ, a cerebal cotex is, specificly, the outer layer of the brain which contains grey matter and neurons....but after saying that, a Cortex is a outer...
No, the frontal cortex is (frontal) part of the cerebral cortex
yes
Frontal. It lies just in front of the central sulcus.
renal and kidney are the same so the answer is Yes. the cortex is the outer part of the kidney as opposed to the medulla, the inner part.