immovable vs motile

immovable

adj
  • steadfast in purpose or intention; unalterable, unyielding 

  • not capable of being affected or moved in feeling; impassive 

  • not liable to be removed; permanent in place or tenure; fixed 

  • incapable of being physically moved; fixed 

noun
  • that which can not be moved; something which is immovable 

motile

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

adj
  • 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. 

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

  • In organs or organelles: capable of producing motion. 

  • In organisms: having the power to move spontaneously. 

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