administrator vs commander

administrator

noun
  • One who administers affairs; one who directs, manages, executes, or dispenses, whether in civil, judicial, political, or ecclesiastical affairs; a manager 

  • A person who manages or settles the estate of an intestate, or of a testator when there is no competent executor; one to whom the right of administration has been committed by competent authority 

  • One who is responsible for software installation, management, information and maintenance of a computer or network 

commander

noun
  • One who exercises control and direction of a military or naval organization. 

  • A designation or rank in certain non-military organizations such as NASA and various police forces. 

  • A naval officer whose rank is above that of a lieutenant commander and below that of captain. 

  • One who exercises control and direction over a group of persons. 

  • A rank within an honorary order: e.g. Commander of the Legion of Honour. 

  • Any of various nymphalid butterflies of the Asian genus Moduza. 

  • A heavy beetle or wooden mallet, used in paving, in sail lofts, etc. 

How often have the words administrator and commander occurred in a corpus of books? (source: Google Ngram Viewer )