hosepipe vs pipework

hosepipe

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

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

pipework

noun
  • Any system of pipes or tubes; piping 

  • The pipes and stops of an organ 

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