ascend vs cross the line

ascend

verb
  • To succeed. 

  • To slope in an upward direction. 

  • To become higher in pitch. 

  • To move upward, to fly, to soar. 

  • To trace, search or go backwards temporally (e.g., through records, genealogies, routes, etc.). 

  • To lose one's virginity, especially of a man through unpaid and consensual sexual intercourse with a woman. 

  • To go up. 

  • To rise; to become higher, more noble, etc. 

cross the line

verb
  • To achieve completion of something. 

  • To finish a race. 

  • 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 ascend and cross the line occurred in a corpus of books? (source: Google Ngram Viewer )