jamb vs transom

jamb

noun
  • Either of the vertical components that form the side of an opening in a wall, such as that of a door frame, window frame, or fireplace. 

  • Synonym of jambeau (“piece of armor for the leg”). 

  • Any thick mass of rock that prevents miners from following the lode or vein. 

verb
  • To fix or attach a jamb to. 

transom

noun
  • A crosspiece over a door; a lintel. 

  • The flat or nearly flat stern of a boat or ship. 

  • The horizontal beam on a cross or gallows. 

  • Any of several transverse structural members in a ship, especially at the stern; a thwart. 

  • Items that have arrived over the transom. 

  • A transom window. 

  • A horizontal dividing bar in a window. 

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