ascent vs takeoff

ascent

noun
  • The act of ascending; a motion upwards. 

  • An increase, for example in popularity or hierarchy 

  • The ascender height in a typeface. 

  • The degree of elevation of an object, or the angle it makes with a horizontal line; inclination; gradient; steepness 

  • The way or means by which one ascends. 

  • An eminence, hill, or high place. 

takeoff

noun
  • The rising or ascent of an aircraft or rocket into flight. 

  • The spot from which one takes off; specifically, the place from which a jumper rises in leaping. 

  • The removal of sheets from the press. 

  • A parody or lampoon of someone or something. 

  • A quantification, especially of building materials. 

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