inner tube vs syringe

inner tube

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

  • Synonym of swim ring 

syringe

noun
  • A device used for injecting or drawing fluids through a membrane. 

  • A device consisting of a hypodermic needle, a chamber for containing liquids, and a piston for applying pressure (to inject) or reducing pressure (to draw); a hypodermic syringe. 

verb
  • To inject by means of a syringe. 

  • To clean or rinse by means of a syringe. 

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