motile vs operational

motile

adj
  • Of or relating to those mental images that arise from the sensations of bodily movement and position. Cf. kinesthetic, proprioceptive. 

  • In organs: having the power to move their contents, or to change their shape or tension by writhing or contracting as required by their particular physiological functions. 

  • In organs or organelles: capable of producing motion. 

  • In organisms: having the power to move spontaneously. 

noun
  • A person whose prevailing mental imagery takes the form of inner feelings of action, such as incipient pronunciation of words, muscular innervations, etc. 

operational

adj
  • Of or relating to operations, especially military operations. 

  • Effective or operative. 

  • Determined by means of practical measures. 

  • Functioning and ready for use. 

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