root cellar vs wine cellar

root cellar

noun
  • A structure built underground or partially underground and used to store vegetables, fruits, and nuts or other foods. 

verb
  • To cellar (food) in a root cellar. 

wine cellar

noun
  • An underground place for storing wine at a constant temperature. 

  • A collection of wines. 

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