couch potato vs lounger

couch potato

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

lounger

noun
  • One who lounges; an idler. 

  • A chair made for lounging. 

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