Plants have several important stem parts, including:
Node: The point on a stem where leaves, branches or flowers grow from.
Internode: The space or segment between two nodes on a stem.
Axil: The angle between the upper side of a leaf or a branch and the stem from which it arises.
Bud: A small undeveloped shoot that can grow into a branch or a flower.
Terminal bud: The bud at the end of a stem which controls the growth of the stem.
Lateral bud: The bud on the side of the stem that can grow into a branch or a flower.
Bark: The protective outer layer of a stem.
Phloem: The tissue in a stem that transports sugars and other organic compounds from the leaves to the rest of the plant.
Xylem: The tissue in a stem that transports water and minerals from the roots to the rest of the plant.
Cambium: The tissue in a stem that produces new phloem and xylem cells for growth.