bressummer vs girder

bressummer

noun
  • A large, horizontal supporting beam which bears the weight of a wall starting on a first or higher floor, particularly when exposed or used to support a jetty (timber-frame overhang construction). 

girder

noun
  • A beam of steel, wood, or reinforced concrete, used as a main horizontal support in a building or structure. 

  • One who girds; a satirist. 

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