amelioration vs growth

amelioration

noun
  • The act of making better. 

  • An improvement. 

  • The process by which a term gains a more positive connotation over time. 

  • An ameliorative change of a concept or a repertoire of concepts. 

growth

noun
  • The act of growing, getting bigger or higher. 

  • An increase in psychological strength or resilience; an increased ability to overcome adversity. 

  • An increase in size, number, value, or strength. 

  • An abnormal mass such as a tumor. 

  • Something that grows or has grown. 

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