dynamic vs operant

dynamic

noun
  • A characteristic or manner of an interaction; a behavior. 

  • A moving force. 

  • The varying loudness or volume of a song or the markings that indicate the loudness. 

  • A symbol in a musical score that indicates the desired level of volume. 

  • A verb that indicates continued or progressive action on the part of the subject. 

adj
  • Happening at runtime instead of being predetermined at compile time. 

  • Pertaining to dynamics, the branch of mechanics concerned with the effects of forces on the motion of objects. 

  • Of a verb: not stative, but fientive; indicating continued or progressive action on the part of the subject. 

  • Able to change and adapt. 

  • Powerful; energetic. 

  • Having to do with the volume of sound. 

  • Changing; active; in motion. 

operant

noun
  • Any of a class of behaviors that produce consequences by operating (i.e., acting) upon the environment. 

  • An operative person or thing. 

adj
  • That operates to produce an effect. 

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