noun (n)

• changing the ground level to a smooth horizontal or gently sloping surface(noun.act)

  Synonym:
  grading
  

  source: wordnet30
• complete destruction of a building(noun.act)

  Synonym:
  demolishing, razing, tearing down
  

  source: wordnet30
• the act of making equal or uniform(noun.act)

  Synonym:
  equalisation, equalization
  

  source: wordnet30
• The act or operation of making level.(noun)

  source: webster1913