What is the difference between a code of practice and a code of conduct?

I think a code of practice is the system put into place by the business/company to follow regarding health and safety and to enhance the positive elements and to keep everyone informed of the rules and regulations put into place by the employer

A code of conduct is more on a personal level for example behaviour from the employee/student etc, maybe its along the lines of not being drunk on duty or working under the influence of drugs or even not being rude to clients etc.... I think!!!