convolute vs interlace

convolute

verb
  • To confuse, mix up (something) with something else. 

  • To make unnecessarily complex. 

  • To fold or coil into numerous overlapping layers. 

adj
  • Convoluted. 

  • Coiled such that one edge is inside, and one outside the coil, giving a spiral effect in cross section. 

interlace

verb
  • To mingle; to blend. 

  • To cross one another as if woven together; to intertwine; to blend intricately. 

  • To cross one with another. 

noun
  • A technique of improving the picture quality of a video signal primarily on CRT devices without consuming extra bandwidth. 

  • A decorative element found especially in early medieval art 

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