power pole vs telephone pole

power pole

noun
  • A vertical pole of concrete, wood or steel that carries electric power cables. 

  • A kind of modern anchor on the back of a boat, often one of a pair, that looks like an antenna and goes down on demand to hold the vessel in place. 

telephone pole

noun
  • A utility pole that supports telephone lines 

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