Withdrawal from opioids such as oxycodone causes physical symptoms similar to the flu. Withdrawal also causes psychological symptoms whose demoralizing affects can be just as overpowering as the physical symptoms of withdrawal.
A director is a person from a group of managers who leads or supervises a particular area of a company, program, or project. Companies that use this term often have many directors spread throughout different business functions or roles (e.g. director of human resources).
Company officer positions are senior executive-level in nature in most companies and include chief financial officers and, sometimes, chief accounting officers. CFOs and CAOs are also frequently referred to as vice presidents. So, a CFO might be called a vice president of finance and a CAO a vice president of accounting.