beach chair vs couch potato

beach chair

noun
  • A special chair designed to provide comfort and protection from sun, wind, rain, and sand on beaches frequented by tourists. 

couch potato

noun
  • A person who spends a lot of time sitting or lying down, often watching television, eating snacks or drinking alcohol. 

How often have the words beach chair and couch potato occurred in a corpus of books? (source: Google Ngram Viewer )