elder vs introducer

elder

noun
  • One who is older than another. 

  • A small tree, Sambucus nigra, having white flowers in a cluster, and edible purple berries 

  • An officer of a church, sometimes having teaching responsibilities. 

  • A pagan or Heathen priest or priestess. 

  • A cow's udder, especially used as food. 

  • A clergyman authorized to administer all the sacraments. 

  • One who lived at an earlier period; a predecessor. 

  • Title for a male missionary; title for a general authority. 

  • An older person. 

  • One ordained to the lowest office in the Melchizedek priesthood. 

  • Male missionary. 

  • An older member, usually a leader, of some community. 

  • Any of the other species of the genus Sambucus: small trees, shrubs or herbaceous perennials with red, purple, or white/yellow berries (some of which are poisonous). 

verb
  • To admonish or reprove for improper conduct by the elders of the meeting. 

introducer

noun
  • Someone or something that introduces. 

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