gazebo vs shack

gazebo

noun
  • A belvedere, either a type of summer-house or a roofed, detached porch-like structure, usually in a yard, park or lawn. 

shack

noun
  • A crude, roughly built hut or cabin. 

  • Any poorly constructed or poorly furnished building. 

  • Bait that can be picked up at sea. 

  • A drink, especially an alcoholic one. 

  • The room from which a ham radio operator transmits. 

verb
  • To live (in or with); to shack up. 

  • To wander as a vagabond or tramp. 

  • To drink, especially alcohol. 

  • To hibernate; to go into winter quarters. 

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