amplify vs decrease

amplify

verb
  • To add content that is not present in the source text to the target text, usually to improve the fluency of the translation. 

  • To increase the amplitude of something, especially of an electric current. 

  • To render larger, more extended, or more intense. 

  • To enlarge by addition or commenting; to treat copiously by adding particulars, illustrations, etc.; to expand. 

decrease

verb
  • Of a quantity, to become smaller. 

  • To make (a quantity) smaller. 

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. 

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