chicory vs escarole

chicory

noun
  • The endive (Cichorium endivia), the source of escarole and frisée. 

  • Either of two plants of the Asteraceae family. 

  • The common chicory (Cichorium intybus), the source of Belgian endive, radicchio, and sugarloaf. 

  • A coffee substitute made from the roasted roots of the common chicory, sometimes used as a cheap adulterant in real coffee. 

escarole

noun
  • A subspecies or variety of broad-leaved endive (Cichorium endivia subsp. endivia, syn. Cichorium endivia var. latifolium), which is eaten as a vegetable. 

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