cowling vs tarpaulin

cowling

noun
  • A removable protective covering for the engine of an aircraft, motorcycle, etc. 

  • A young or little cow; calf. 

tarpaulin

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

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

verb
  • To cover with a tarpaulin. 

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