raw material vs warp and woof

raw material

noun
  • Any physical product serving as input to a factory or other installation which processes it. 

  • A material in its unprocessed, natural state considered usable for manufacture. 

warp and woof

noun
  • The fundamental structure of any process or system. 

  • The threads in a woven fabric, composed of the warp (threads running lengthwise) and woof (threads running crosswise) to create the texture of the fabric. 

How often have the words raw material and warp and woof occurred in a corpus of books? (source: Google Ngram Viewer )