tarpaulin vs trench coat

tarpaulin

noun
  • A hat made of, or covered with, painted or tarred cloth, worn by sailors and others. 

  • A tarp, a heavy, waterproof sheet of material, often cloth, used as a cover or blanket. 

verb
  • To cover with a tarpaulin. 

trench coat

noun
  • A military-style raincoat with a belt and deep pockets and often epaulettes. 

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