decrease vs upgrowth

decrease

noun
  • 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). 

  • An amount by which a quantity is decreased. 

verb
  • Of a quantity, to become smaller. 

  • To make (a quantity) smaller. 

upgrowth

noun
  • The process or result of growing up; progress; development. 

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