awning vs rooftop

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. 

rooftop

noun
  • The top layer of a roof; the material covering or composing a roof. 

  • The area atop a roof. 

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