ambition vs move in on

ambition

verb
  • To seek after ambitiously or eagerly; to covet. 

noun
  • Eager or inordinate desire for some object that confers distinction, as preferment, honor, superiority, political power, or fame; desire to distinguish one's self from other people. 

  • An object of an ardent desire. 

  • A personal quality similar to motivation, not necessarily tied to a single goal. 

  • A desire, as in (sense 1), for another person to achieve these things. 

move in on

verb
  • To come closer to, as if to catch or hunt. 

  • To encroach or prepare to take over (a thing, relationship, task or place that is or was somebody else's). 

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