lamppost vs streetlight

lamppost

noun
  • The pole that holds up a light so it can illuminate a wide area, such as holds up a streetlight. 

  • A tall, thin person. 

streetlight

noun
  • Any large outdoor light used to illuminate a public area, usually urban. 

  • The light produced by these lights. 

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