reduce vs upgrade

reduce

verb
  • To perform a reduction; to restore a fracture or dislocation to the correct alignment. 

  • To annul by legal means. 

  • To convert to written form. (Usage note: this verb almost always appears as "reduce to writing".) 

  • To lose weight. 

  • To bring to an inferior state or condition. 

  • To simplify an equation or formula without changing its value. 

  • To bring to an inferior rank; to degrade, to demote. 

  • To convert a syllogism to a clearer or simpler form. 

  • To add electrons / hydrogen or to remove oxygen. 

  • To humble; to conquer; to subdue; to capture. 

  • To bring down the size, quantity, quality, value or intensity of something; to diminish, to lower. 

  • To strike off the payroll. 

  • To decrease the liquid content of food by boiling much of its water off. 

  • To produce metal from ore by removing nonmetallic elements in a smelter. 

  • To express the solution of a problem in terms of another (known) algorithm. 

  • To reform a line or column from (a square). 

upgrade

verb
  • To improve, usually applied to technology, generally by complete replacement of one or more components 

  • To replace with something better. 

  • To improve the equipment or furnishings of or services rendered to 

  • To replace a program with a later version of itself, a version having a higher version number or marketed under a more recent product name. 

  • To improve in condition or status. 

adv
  • Up a slope or grade. 

noun
  • An upward grade or slope. 

  • An improvement 

  • An improved component or replacement item, usually applied to technology 

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