augment vs decrement

augment

noun
  • In some Indo-European languages, a prefix e- (a- in Sanskrit) indicating a past tense of a verb. 

  • In some Bantu languages, an additional vowel prepended to the noun prefix. 

  • An increase. 

verb
  • To slow the tempo or meter, e.g. for a dramatic or stately passage. 

  • To increase; to make larger or supplement. 

  • To grow; to increase; to become greater. 

  • To add an augment to. 

  • To increase an interval, especially the largest interval in a triad, by a half step (chromatic semitone). 

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. 

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