awning vs cowling

awning

noun
  • A rooflike cover, usually of canvas, extended over or before any place as a shelter from the sun, rain, or wind. 

  • That part of the poop deck which is continued forward beyond the bulkhead of the cabin. 

cowling

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

  • A young or little cow; calf. 

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