come in vs cross the line

come in

verb
  • To finish a race or similar competition in first place. 

  • To begin transmitting. 

  • To enter. 

  • To finish a race or similar competition in a particular position, such as first place, second place, or the like. 

  • To become fashionable. 

  • To have a strong enough signal to be able to be received well. 

  • To join or enter; to begin playing with a group. 

  • To rise. 

  • To become relevant, applicable, or useful. 

  • To arrive. 

  • To fully develop. 

  • To become available. 

  • To give in; to yield. 

  • To surrender; to turn oneself in. 

  • To function in the indicated manner. 

cross the line

verb
  • To finish a race. 

  • To achieve completion of something. 

  • To overstep a boundary, rule, or limit; to go too far or do something unacceptable. 

  • To cross the equator, as a vessel at sea. 

  • To film from the opposite side of an imaginary axis on set in order to view the actors from the opposite direction. 

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