#categorization__categorisation__classification__compartmentalization__compartmentalisation  the grouping of things into classes or categories
  supertype:  grouping  the activity of putting things together in groups
  subtype:  indexing  the act of classifying and providing an index in order to make items easier to retrieve
  subtype:  reclassification  classifying something again (usually in a new category)
  subtype:  stratification  the act or process or arranging persons into classes or social strata
  subtype:  taxonomy  practice of classifying plants and animals according to their presumed natural relationships
  subtype:  typology  classification according to general type

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