Cocaine is also known as coke, charlie or snow. Crack, which is a kind of 'baked' version of cocaine can be called rock, stone and wash. Cocaine comes as a white powder that is usually snorted up the nose. Cocaine will give you a confidence 'buzz' for about 30 minutes. With crack the buzz is shorter but much stronger and more addictive, leaving you with a powerful craving for more.
Cocaine can cause heart problems, convulsions and paranoia.
Snorting it may permanently damage your nose. Smoking crack may also damage your lungs. Taking too much cocaine or crack can kill.