pinery vs pinetum

pinery

noun
  • A pinewood, pinetum, forest or grove where pine trees are grown. 

  • A hothouse or (tropical) area used as a plantation for the cultivation of pineapple plants (genus Ananas) and production of their homonymous fruit. 

pinetum

noun
  • An arboretum, or part of an arboretum or garden, devoted to growing conifers 

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