jardinière vs planter box

jardinière

noun
  • An ornamental pot for the display of live or cut flowers; a planter. 

  • A vegetable soup or sauce. 

  • A lappet forming part of an old headdress. 

  • Diced, cooked vegetables served as a garnish. 

planter box

noun
  • A flower box; an object that contains live flowers, usually affixed outside, just below a window. 

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