power grid vs reticulation

power grid

noun
  • The infrastructure for distributing electrical power throughout a region. 

reticulation

noun
  • A network of criss-crossing lines, strands, cables or pipes. 

  • A method of copying a painting by the help of threads stretched across a frame. 

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