Definitions - w

Washads refer to use of the cleaning of surfaces in a specific way to leave behind an advert by the shape of what was cleaned away. Often this is achieved by the use of a metal stencil 'punched' through as to leave the required advert when used with a power water cleaner.

Its is essential a form of 'green graffiti' or 'reverse graffiti'. The legality of the undertaking really depends on the laws in force in particular country and government district(s) concerned. Some do not specifically prevent it, whilst others classify any form of advertising as requiring explicit prior permission of the owner of the surface being so advertised upon. 

The level below the land surface at which the subsurface material is fully saturated with water. The depth of the water table reflects the minimum level to which wells must be drilled for water extraction.

Those products that are in the upper 25% of water conservation for all similar products, or at least 10% more water-conserving than the minimum level that meets the Federal standards.

Watt-hour (WHr) is a measurement of power with respect to time. One watt-hour is equal to one watt being used for a period of one hour.

The refers to using the periodic movement of the waves to generate power, usually in the form of electrical energy.

The wave energy can either be harvested out to sea using buoys or arrays of pontoons. Also if a coastline 'funnels' the waves in the right way, you can construct a wave dam to generate power by hydro.

The process of reducing the leaks of heat from or into a building. It may involve caulking, weatherstripping, adding insulation, and other similar improvements to the building shell.

A turbine having a large vaned wheel rotated by the wind to generate electricity. Often collected together to form 'farms'.

A windcatcher is a traditional Persian architectural device used for centuries to create natural ventilation and cooling in buildings.

See the wikipedia article for more detail.

Woke washing is the act of looking to agree with the woke movement without actually being committed to it. Akin to green washing but more around social issues of race and entitlement.