Cannabis, which is also known as marijuana, is a plant that has compounds that have been used for millennia for recreational and medical treatment purposes. There are hundreds of compounds that have been isolated from this plant, with THC and CBD being the two most common. THC stands for tetrahydrocannabinol. It is responsible for the psychoactive impacts of the plant. CBD stands for cannabidiol. This is the other main compound that has been isolated from the plant, and it can be used in the treatment of a variety of issues. Cannabis can lead to a variety of mental and physical effects. People use cannabis by smoking, vaping, mixing it in food, or isolating it as an extract. Cannabis compounds can enter and leave the system at different rates depending on how they are taken. In general, people who inhale cannabis feel the effects faster than those who mix cannabis in with their food. Marijuana is the colloquial name given to cannabis, a plant that has been used for thousands of years by humans for recreational and medicinal purposes. There are hundreds of compounds that can be isolated from marijuana. Two of the most common examples include THC, which stands for tetrahydrocannabinol, and CBD, which stands for cannabidiol. Marijuana can be administered in a wide variety of ways. Some people mix it into their food and beverages, while other people apply it directly to the surfaces of the skin. Some people prefer to smoke or inhale it while other people turn it into a substance they can place directly under the surface of the skin. THC is responsible for the psychoactive effects of marijuana, while CBD is a common target of research for therapeutic purposes.