engage vs watch

engage

verb
  • To engross or hold the attention of; to keep busy or occupied. 

  • To enter into conflict with (an enemy). 

  • To come into gear with. 

  • To enter into (an activity), to participate (construed with in). 

  • To draw into conversation. 

  • To mesh or interlock (of machinery, especially a clutch). 

  • To attract, to please; (archaic) to fascinate or win over (someone). 

  • To guarantee or promise (to do something). 

  • To arrange to employ or use (a worker, a space, etc.). 

  • To bind through legal or moral obligation (to do something, especially to marry) (usually in passive). 

  • To enter into battle. 

watch

verb
  • To observe over a period of time; to notice or pay attention. 

  • To mind, attend, or guard. 

  • To be wary or cautious of. 

  • To serve the purpose of a watchman by floating properly in its place. 

  • To be vigilant or on one's guard. 

  • To look at, see, or view for a period of time. 

  • To remain awake with a sick or dying person; to maintain a vigil. 

  • To act as a lookout. 

  • To attend to dangers to or regarding. 

noun
  • A portable or wearable timepiece. 

  • The act of guarding and observing someone or something. 

  • A period of wakefulness between the two sleeps of a biphasic sleep pattern (the dead sleep or first sleep and morning sleep or second sleep): the first waking. 

  • The post or office of a watchman; also, the place where a watchman is posted, or where a guard is kept. 

  • A particular time period when guarding is kept. 

  • A person or group of people who guard. 

  • A period of time on duty, usually four hours in length; the officers and crew who tend the working of a vessel during the same watch. (FM 55–501). 

  • The act of seeing, or viewing, for a period of time. 

  • A group of sailors and officers aboard a ship or shore station with a common period of duty: starboard watch, port watch. 

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