Ropes, Webbing, Knots
                A hydrant that receives water from only one direction
What is a dead-end hydrant
The general location where a fire began
What is area of origin
a fire effect that was once believed to indicate exactly how long a material was exposed to fire.
What is depth of char
Typically involves stored materials, debris, trash, and rubbish
What is an exterior fire
Broad concept, encompassing anything that can taint physical evidence
What is contamination