#essentiality__essentialness__essentialnes  basic importance
  exclusion:  inessentiality
  supertype:  importance  the quality of being important and worthy of note; "the importance of a well-balanced diet"
  subtype:  vitalness__vitalnes  the quality of being essential to maintain life
  subtype:  indispensability__indispensableness__indispensablenes__vitalnes  the quality possessed by something that you cannot possibly do without

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