v Crown fire - a severe fire where flames travel from tree to tree at the level of the tree’s crowns or tops. v Fire line - a zone along a fire’s edge where there is little or no fuel available to the fire v Backfire -  a fire started to stop an advancing fire by creating a burned area in its path v Firebrand - flaming or glowing fuel particles that can be carried naturally by wind, convection currents or gravity into unburned fuels v Spotting - outbreak of secondary fires as firebrands or other burning materials are carried ahead of the main fire by winds v wildfire - an unwanted fire that requires measures of control. v firing pattern - the specific pattern and timing of ignition of a prescribed fire to affect the direction or rate of fire spread and fire intensity.