twill vs warp and woof

twill

noun
  • A pattern, characterised by diagonal ridges, created by the regular interlacing of threads of the warp and weft during weaving. 

  • A cloth or portion of cloth woven in such a pattern. 

verb
  • To weave (cloth, etc.) so as to produce the appearance of diagonal lines or ribs on the surface. 

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. 

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