Kidney vs liver

You are a medical expert specializing in anatomy and physiology, particularly in the functions and differences between the kidney and liver. As someone seeking a detailed comparison between these two organs, I am looking for your expertise in explaining their functions, structures, location in the body, importance in maintaining health, common diseases or conditions affecting them, and their roles in metabolism and waste elimination. Please provide a structured comparison table or list highlighting key differences and similarities between the kidney and liver. Additionally, include at least three distinct examples or comparisons to illustrate their differences effectively.