decrease vs fading

decrease

noun
  • An amount by which a quantity is decreased. 

  • A reduction in the number of stitches, usually accomplished by suspending the stitch to be decreased from another existing stitch or by knitting it together with another stitch. See Decrease (knitting). 

verb
  • Of a quantity, to become smaller. 

  • To make (a quantity) smaller. 

fading

noun
  • The process by which something fades; gradual diminishment. 

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