hosepipe vs inner tube

hosepipe

noun
  • A flexible pipe for carrying water or other liquids; a garden hose. 

verb
  • To film with erratic panning movements of the camera. 

inner tube

noun
  • An inflatable rubber tube inserted into the casing of a pneumatic tyre/tire. 

  • Synonym of swim ring 

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