caoutchouc vs resin

caoutchouc

noun
  • latex; natural rubber 

resin

noun
  • Any of various yellowish viscous liquids or soft solids of plant origin; used in lacquers, varnishes and many other applications; chemically they are mostly hydrocarbons, often polycyclic. 

  • Any synthetic compound of similar properties. 

  • A viscous hydrocarbon secretion of many plants, particularly coniferous trees. 

verb
  • To apply resin to. 

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