elderdom vs mastership

elderdom

noun
  • Authority; dominion. 

  • Preeminence; superiority. 

  • The role or influence of an elder or elders. 

  • The authority, rule, or office of an elder. 

  • The state of being an elder, or of being older; elderhood. 

mastership

noun
  • Mastery: dominion, superiority, control. 

  • Mastery: superior skill. 

  • The state or office of a master. 

  • A title of respect, sometimes ironic. 

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