fitting vs hardness

fitting

adj
  • Ready, appropriate, suitable, or in keeping 

noun
  • A small part, especially a standardized or detachable part of a device or machine. 

  • The process of fitting up; especially of applying craft methods such as skilled filing to the making and assembling of machines or other products. 

  • A tube connector; a standardized connecting part of a piping system to attach sections of pipe together, such as a coupling 

  • The act of trying on clothes to inspect or adjust the fit. 

  • The action or condition of having fits in the sense of seizures or convulsions. 

  • A removable item in a house or other building, which can be taken with one when one moves out, such as a moveable piece of furniture, a carpet, picture, etc.; US furnishing; compare fixture. 

verb
  • Getting ready; preparing. 

hardness

noun
  • 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). 

How often have the words fitting and hardness occurred in a corpus of books? (source: Google Ngram Viewer )