Did you mean...

come across

verb, to meet or find by accident

concierge

noun, (esp in France) a caretaker of a block of flats, hotel, etc, esp one who lives on the premises

concourse

noun, a crowd; throng

congeries

noun, a collection of objects or ideas; mass; heap

congress

noun, a meeting or conference, esp of representatives of a number of sovereign states

Congress

noun, the bicameral federal legislature of the US, consisting of the House of Representatives and the Senate

congruous

adjective, corresponding or agreeing

conkers

noun, a game in which a player swings a horse chestnut (conker), threaded onto a string, against that of another player to try to break it

cosmic rays

plural noun, radiation consisting of particles, esp protons, of very high energy that reach the earth from outer space. Also called: cosmic radiation