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Functionality vs Usability - What's the difference?

functionality | usability |

As nouns the difference between functionality and usability

is that functionality is the ability to perform a task or function; that set of functions that something is able or equipped to perform while usability is the state or condition of being usable.

functionality

English

Noun

  • The ability to perform a task or function; that set of functions that something is able or equipped to perform.
  • (US, legal) In United States trademark law, the tendency of a product design to serve a function other than identification of the product, preventing that design from being protected as a trademark.
  • (organic chemistry) The presence of a functional group.
    • Aldrichimica Acta Volume 30 No 4] (pdf) from [http://www.sigmaaldrich.com/chemistry/chemical-synthesis/learning-center/aldrichimica-acta.html Sigma-Aldrich
  • :: The vinyldiazomethanes that have been commonly used in our studies contain an electron-withdrawing group adjacent to the diazo functionality .

    • Related terms

    * function * functional

    usability

    English

    Alternative forms

    * useability

    Noun

  • The state or condition of being usable.
  • The degree to which an object, device, software application, etc. is easy to use with no specific training.

    • Derived terms

    * reusability

    Related terms

    * usable

    See also

    * ("usability" on Wikipedia)