CBD (cannabidiol) and THC (tetrahydrocannabinol) are the most common cannabinoids found in cannabis products. THC is the main psychoactive compound in marijuana. It’s what makes people feel “high.” CBD doesn’t cause that high. Instead, it’s thought to work with other elements in the body linked to feelings of well-being.
You will find lots of reference material on the internet. One example is this one from WebMD.