bressummer vs scantling

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). 

scantling

noun
  • A small, upright beam of timber used in construction, especially less than five inches square. 

  • Timber in the form of small beams and pieces. 

  • The set size or dimension of a piece of timber, stone etc., or materials used to build ships or aircraft. 

adj
  • Not plentiful; small; scanty. 

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