decrement vs shrinkage

decrement

noun
  • A small quantity removed or lost. One of a series of regular subtractions. 

verb
  • To decrease a value by a basic quantity unit. 

shrinkage

noun
  • The act of shrinking, or the proportion by which something shrinks. 

  • The reduction in size of the male genitalia when cold, such as from immersion in cold water. 

  • The loss of merchandise through theft, spoilage, and obsolescence. 

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