gingiva vs sealer

gingiva

noun
  • The gum, consisting of the tissue surrounding the roots of the teeth and covering the jawbone. 

sealer

noun
  • A tool used to seal something. 

  • A goal, shot, point, etc., scored close to fulltime so that it becomes impossible for the losing side to score enough to win. 

  • A vessel engaged in the business of capturing seals. 

  • A person who hunts seals. 

  • A coating designed to prevent excessive absorption of finish coats into porous surfaces; a coating designed to prevent bleeding. 

  • A person who is employed to seal things. 

  • An officer responsible for sealing writs or instruments, stamping weights and measures, etc. 

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