calico vs kapok

calico

noun
  • A kind of rough cloth made from unbleached and not fully processed cotton, often printed with a bright pattern. 

  • The plant disease caused by Tobacco mosaic virus. 

adj
  • Made of calico or resembling the color of calico cloth, having a pattern of red and contrasting areas; variegated. 

kapok

noun
  • A silky fibre obtained from seed pods of the silk-cotton tree (Ceiba pentandra) used for insulation and stuffing for mattresses, pillows, etc. 

  • A cotton tree, Malabar silk-cotton tree, or red silk-cotton tree (Bombax ceiba). 

  • A silk-cotton tree (Ceiba pentandra). 

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