gatepost vs jamb

gatepost

noun
  • a vertical post from which a gate is hung/attached. 

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. 

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