swerve vs vary

swerve

verb
  • To go out of one's way to avoid; to snub. 

  • To bend; to incline; to give way. 

  • To go out of a straight line; to deflect. 

  • To wander from any line prescribed, or from a rule or duty; to depart from what is established by law, duty, custom, or the like; to deviate. 

  • Of a projectile, to travel in a curved line 

  • To climb or move upward by winding or turning. 

  • To turn aside or deviate to avoid impact. 

  • To drive in the trajectory of another vehicle to stop it, to cut off. 

noun
  • A sudden movement out of a straight line, for example to avoid a collision. 

  • A deviation from duty or custom. 

vary

verb
  • To be or act different from the usual. 

  • To make of different kinds; to make different from one another; to diversity; to variegate. 

  • To embellish; to change fancifully; to present under new aspects, as of form, key, measure, etc. See variation. 

  • Not to remain constant: to change with time or a similar parameter. 

  • To institute a change in, from a current state; to modify. 

  • To change with time or a similar parameter. 

  • To display differences. 

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