Difference between burl and regular veneer

Redwood Burl — Heartwood color can range from a light pinkish brown to a deep reddish brown. Sapwood is a pale white/yellow. Curly figure or Redwood burl (sometimes referred to as “lace” or by the name Vavona) are o Grain: Deep red with swirling flash & figure. Grain is generally straight, though figured pieces may be be wavy or irregular. Coarse texture and low natural luster. These characteristics distinguish Redwood Burl from similar species in the veneer market.