hammer beam vs timber

hammer beam

noun
  • A member of a kind of roof truss (a hammer-beam truss), so framed as not to have a tiebeam at the top of the wall. Each principal has two hammer beams, which occupy the situation, and to some extent serve the purpose, of a tiebeam. 

timber

noun
  • A heavy wooden beam, generally a whole log that has been squared off and used to provide heavy support for something such as a roof. 

  • The wooden stock of a rifle or shotgun. 

  • Material for any structure. 

  • Trees in a forest regarded as a source of wood. 

  • Wood that has been pre-cut and is ready for use in construction. 

intj
  • Used by loggers to warn others that a tree being felled is falling. 

verb
  • To light or land on a tree. 

  • To surmount as a timber does. 

  • To fit with timbers. 

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