CBD, CBN, and CBG are all compounds found in the cannabis plant, but they have different properties and potential uses.

CBD, or cannabidiol, is the most well-known and widely studied of these compounds. It is non-psychoactive, meaning it does not produce the "high" associated with THC, and has been shown to have potential therapeutic benefits for a variety of conditions, including anxiety, pain, and inflammation.

CBN, or cannabinol, is a minor cannabinoid that is formed when THC is exposed to oxygen and light. It is also non-psychoactive, but it has been shown to have sedative properties and may be useful for treating insomnia.

CBG, or cannabigerol, is a non-psychoactive cannabinoid that is present in low levels in most cannabis strains. It has been shown to have potential therapeutic benefits for a variety of conditions, including glaucoma, inflammatory bowel disease, and cancer.

Overall, CBD, CBN and CBG are all different compounds with different properties and potential uses. While CBD is most commonly known and widely used, CBN and CBG are gaining more popularity as well. Research is ongoing to understand the properties and benefits of these compounds fully.