accelerating vs cumulative

accelerating

noun
  • An act of acceleration. 

cumulative

adj
  • Adding one statement to another. 

  • That tends to accumulate. 

  • Incorporating all current and previous data up to the present or at the time of measuring or collating. 

  • Having priority rights to receive a dividend that accrue until paid. 

  • That is formed by an accumulation of successive additions. 

  • (of evidence, witnesses, etc.) Intended to illustrate an argument that has already been demonstrated excessively. 

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