The fact of being easy, or easily done; absence of difficulty, simplicity.
Dexterity of speech or action; skill, talent.
An institution specially designed for a specific purpose, such as incarceration, military use, or scientific experimentation.
A toilet.
The physical means or contrivances to make something (especially a public service) possible; the required equipment, infrastructure, location etc.
A condition of mental weakness less than idiocy, but enough to make a person easily persuaded to do something against their better interest.
The quality of being hard.
An instance of this quality; hardship.
The resistance to scratching, cutting, indentation or abrasion of a metal or other solid material.
The penetrating ability of electromagnetic radiation, such as x-rays; generally, the shorter the wavelength, the harder and more penetrating the radiation.
The measure of resistance to damage of a facility, equipment, installation, or telecommunications infrastructure when subjected to attack.
A measure of how hard a material is
The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).