bituminize vs tarmac

bituminize

verb
  • to treat with bitumen 

tarmac

verb
  • To pave with tarmacadam or a similar material. 

  • To spend time idling on a runway, usually waiting for takeoff clearance. 

noun
  • The area of an airport, other than the runway, where planes park or maneuver. 

  • The driveable surface of a road. 

  • Tarmacadam. 

  • Any bituminous road surfacing material. 

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