Committee
A committee is a group of people gathered together for a specific purpose.
Example:
The United States Senate Committee on Finance "concerns itself with matters relating to: taxation and other revenue measures generally, and those relating to the insular possessions; bonded debt of the United States; customs, collection districts, and ports of entry and delivery; reciprocal trade agreements; tariff and import quotas, and related matters thereto; the transportation of dutiable goods; deposit of public moneys; general revenue sharing; health programs under the Social Security Act, including Medicare, Medicaid, the Children's Health Insurance Program (CHIP), Temporary Assistance to Needy Families (TANF) and other health and human services programs financed by a specific tax or trust fund; and national social security."
Reference:
https://www.finance.senate.gov/about/jurisdiction