Xylol

An aromatic hydrocarbon which is distilled from coal tar. It is used as a solvent for synthetic resins and gums.

Zeolite

A material used in water softeners that attracts colloidal particles in water and retains them until the material is subject to water with a high concentration of salt dissolved in it. When in the presence of salt water

Vitreous clay

A clay with a glazed surface that will not absorb water. Vitreous clay tile liners are usually installed in fireplace flues of site fabricated fireplaces.

Vulnerability

A measure of the possibility of something occurring

Wainscot

The wooden paneling of the lower part of an interior wall up to the dado height in a room.