downspout vs strait

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. 

strait

noun
  • A narrow channel of water connecting two larger bodies of water. 

  • A narrow pass, passage or street. 

  • A difficult position. 

  • A neck of land; an isthmus. 

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