module is the name of a package (namespace) that is kept in a file derived from its name. (a package/namespace called Some::Thing kept in a file called Some/Thing.pm is called a module. Unfortunately when we say module we often refer to a whole distribution.
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.
Chief Procurement Officer (CPO) Executive level employee of an organization whose responsibilities include sourcing, supply management and procurement for the company. Generally, the CPO reports directly to the CEO of a company.