A KD is a slang term representing a 3.5 gram serving of cannabis—or an eighth—named for NBA superstar Kevin Durant.
Kief refers to the sticky crystal resin that coats cannabis buds. Once the cannabis plant is harvested and dried, kief turns into a darker—usually gold to brown—powder-like dusting that is popularly collected in grinders as it readily detaches from the buds when ground.
Kind bud, more properly known as “kine bud,” is a term for high quality cannabis flower. The term “kine” is native Hawaiian for “excellent,” and it is often mispronounced by English speakers as “kind.