aerosol vs sprinkler head

aerosol

noun
  • An aerosol can. 

  • A mixture of fine solid particles or liquid droplets suspended in a gaseous medium. 

  • A colloidal system in which the dispersed phase is composed of either solid or liquid particles and in which the dispersal medium is some gas, usually air. 

  • The payload (e.g. insecticide, paint, oil, cosmetics) and propellant contained by an aerosol can. 

verb
  • To spray with an aerosol. 

sprinkler head

noun
  • A heat-activated device that sprays water in the event of a fire, usually mounted on a ceiling. 

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