conduit vs downspout

conduit

noun
  • A pipe or channel for conveying water, etc. 

  • A duct or tube into which electrical cables may be pulled; a type of raceway. 

  • A means by which something is transmitted. 

  • An investment vehicle that issues short-term commercial paper to finance long-term off-balance sheet bank assets. 

downspout

noun
  • A vertical pipe or conduit that carries rainwater from the scupper, guttering of a building to a lower roof level, drain, ground or storm water runoff system. 

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