regression vs turning point

regression

noun
  • An analytic method to measure the association of one or more independent variables with a dependent variable. 

  • The reappearance of a bug in a piece of software that had previously been fixed. 

  • An equation using specified and associated data for two or more variables such that one variable can be estimated from the remaining variable(s). 

  • The making an exercise less straining to perform by manipulating the details of its performance like loaded weight, range of motion, angle, speed. 

  • The diminishing of a cellular mass like a tumor, or of an organ size. 

  • A psychotherapeutic method whereby healing is facilitated by inducing the patient to act out behaviour typical of an earlier developmental stage. 

  • An action of travelling mentally back in time. 

  • An action of regressing, a return to a previous state. 

turning point

noun
  • A crossroads. 

  • A T-junction. 

  • A decisive point at which a significant change or historical event occurs, or at which a decision must be made. 

  • A maximum or minimum on a graph. 

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