501(c) Groups — Nonprofit, tax-exempt groups organized under section 501(c) of the Internal Revenue Code that can engage in varying amounts of political activity, depending on the type of group ... do ...

There are many ways to define the primary types of corporate cultures ... descriptions are a form of generalization. The larger a group gets, the more exceptions may emerge.

Primary sector companies are directly engaged ... Investors also use sectors to group different types of companies to help gauge whether those companies are performing well or not.