procedure vs regression

procedure

noun
  • A particular method for performing a task. 

  • The steps taken in an action or other legal proceeding. 

  • A series of small tasks or steps taken to accomplish an end. 

  • A subroutine or function coded to perform a specific task, but does not return a value. 

  • A surgical operation. 

  • The set of established forms or methods of an organized body for accomplishing a certain task or tasks. 

regression

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

  • 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 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. 

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