capillary vs vessel

capillary

noun
  • A narrow tube. 

  • Any of the small blood vessels (from 5 to 10 micrometres/micrometers (μm) in diameter) that connect arteries to veins (They are the smallest blood vessels in the body: they convey blood between the arterioles and venules). 

adj
  • Of or pertaining to a narrow tube. 

  • Of, relating to, or caused by surface tension. 

  • Of or pertaining to hair. 

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 capillary and vessel occurred in a corpus of books? (source: Google Ngram Viewer )