growth vs upgrowth

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. 

upgrowth

noun
  • The process or result of growing up; progress; development. 

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