CBD commonly comes in three different forms: CBD isolate (aka pure CBD), full-spectrum CBD, and broad spectrum CBD. Full spectrum CBD is the full hemp plant extract. Broad spectrum CBD is full spectrum CBD, minus the trace amounts of THC. Broad spectrum CBD and full-spectrum CBD have trace amounts of other cannabinoids (e.g. CBG, CBN) and terpenes (e.g. Myrcene, Limonene), while CBD isolate is pure CBD with no trace amounts of other cannabinoids.