kurrat vs ramson

kurrat

noun
  • Egyptian leek; considered a variety of Allium ampeloprasum (Allium ampeloprasum var. kurrat) or a species Allium kurrat 

ramson

noun
  • A plant, Allium ursinum, a wild relative of chives and garlic. 

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