OK vs declination

OK

adj
  • All right, acceptable, permitted. 

  • In good health or a good emotional state. 

  • Satisfactory, reasonably good; not exceptional. 

  • Satisfied (with); willing to accept a state of affairs. 

adv
  • Satisfactorily, sufficiently well. 

intj
  • Used to indicate acknowledgement or acceptance. 

  • Used to dismiss a dialog box or confirm a prompt. 

  • Used to introduce a sentence in order to draw attention to the importance of what is being said. 

  • Used in turn-taking, serving as a request to the speaker to grant the turn to the interrupter. 

name
  • United States postal abbreviation for Oklahoma, a state of the United States of America. 

noun
  • Karaoke. 

  • Endorsement; approval. 

verb
  • To approve. 

  • To confirm by activating a button marked OK. 

declination

noun
  • At a given point, the angle between magnetic north and true north. 

  • A refusal. 

  • At a given point, the angle between the line connecting this point with the geographical center of the earth and the equatorial plane. 

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