latch vs rivet

latch

noun
  • A fastening for a door that has a bar that fits into a notch or slot, and is lifted by a lever or string from either side. 

  • A breastfeeding baby's connection to the breast. 

  • A lightweight lock to protect internal structures from being modified by multiple concurrent accesses. 

  • An electronic circuit that is like a flip-flop, except that it is level triggered instead of edge triggered. 

verb
  • To catch; lay hold of. 

  • To close or lock as if with a latch. 

rivet

noun
  • A cylindrical mechanical fastener that attaches multiple parts together by fitting through a hole and deforming the head(s) at either end. 

  • Any fixed point or certain basis. 

verb
  • To command the attention of. 

  • To attach or fasten parts by using rivets. 

  • To make firm or immovable. 

  • To install rivets. 

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