Cancun Ministerial: The WTO conference in Cancun, Mexico, in 2003. A Ministerial Conference is the topmost decision-making body of the WTO and is held every two years.

Cairns Group: Group of agricultural exporting nations lobbying for agricultural trade liberalisation. Formed in 1986 in Cairns , Australia . Current membership: Argentina , Australia , Bolivia , Brazil , Canada , Chile , Colombia , Costa Rica , Guatemala , Indonesia , Malaysia , New Zealand .

Coefficient value: Unchanging value in an equation.

Commitment: A legal term describing the scope of the specific obligation a country enters into.

Contractual Services Suppliers (CSS): Employees of a foreign-based company or partnership who travel to another country for short periods of stay in order to perform a service pursuant to a contract.

Countervailing Measure (CVM): Also known as ‘countervailing duty’, it is a special duty or tax imposed by an importing country on an imported product for the purpose of offsetting any subsidies provided in the exporting country, directly or indirectly, for the making, production or export of the product.