#spreading__spread  process or result of distributing or extending over a wide expanse of space
  supertype:  change_of_location__travel  a movement through space that changes the location of something
  subtype:  diffusion.spreading  the spread of social institutions (and myths and skills) from one society to another
  subtype:  dispersion__scattering  spreading widely or driving off
     subtype:  Diaspora  the dispersion of the Jews from Palestine after the Babylonian exile (358 BC)
     subtype:  dissipation  breaking up and scattering by dispersion; "the dissipation of the mist"
  subtype:  radiation.spreading  the spread of a group of organisms into new habitats
     subtype:  adaptive_radiation  the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches

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