#common_noun  a noun that denotes any or all members of a class
  exclusion:  proper_noun
  supertype:  noun  a word that can be used to refer to a person or place or thing
  subtype:  verbal_noun__deverbal_noun  a noun that is derived from a verb
     subtype:  gerund  a noun formed from a verb (such as the `-ing' form of an English verb when used as a noun)
  subtype:  adnoun  an adjective used as a noun; "`meek' in `blessed are the meek' is an adnoun"

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