flue vs vessel

flue

noun
  • In an organ flue pipe, the opening between the lower lip and the languet. 

  • A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace). 

  • An enclosed passageway in which to direct air or other gaseous current along. 

vessel

noun
  • A tube or canal that carries fluid in an animal or plant. 

  • A craft designed for transportation through air or space. 

  • Any craft designed for transportation on water, such as a ship or boat. 

  • A container of liquid or other substance, such as a glass, goblet, cup, bottle, bowl, or pitcher. 

  • A person as a container of qualities or feelings. 

verb
  • To put into a vessel. 

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