warp and woof vs wool

warp and woof

noun
  • 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. 

  • The fundamental structure of any process or system. 

wool

noun
  • Yarn, including that made from synthetic fibers. 

  • Anything with a texture like that of wool. 

  • The hair of the sheep, llama and some other ruminants. 

  • A cloth or yarn made from the wool of sheep. 

  • A fine fiber obtained from the leaves of certain trees, such as firs and pines. 

  • A resident of a satellite town outside Liverpool, such as St Helens or Warrington. See also Yonner. 

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