glide vs helicopter

glide

noun
  • A bird, the glede or kite. 

  • An attack or preparatory movement made by sliding down the opponent’s blade, keeping it in constant contact. 

  • The joining of two sounds without a break. 

  • A transitional sound, especially a semivowel. 

  • A smooth and sliding step in dancing the waltz. 

  • The act of gliding. 

  • A kind of cap affixed to the base of the legs of furniture to prevent it from damaging the floor. 

verb
  • To cause to glide. 

  • To move softly, smoothly, or effortlessly. 

  • To fly unpowered, as of an aircraft. Also relates to gliding birds and flying fish. 

  • To pass with a glide, as the voice. 

helicopter

noun
  • A dragonfly. 

  • A powered troweling machine with spinning blades used to spread concrete. 

  • A whirling trick performed with devil sticks. 

  • The winged fruit of certain trees, such as ash, elm, and maple. 

  • An aircraft that is borne along by one or more sets of long rotating blades which allow it to hover, move in any direction including reverse, or land; and typically having a smaller set of blades on its tail that stabilize the aircraft. 

verb
  • To rotate like a helicopter blade. 

  • To overprotect one's children, as a helicopter parent does. 

  • To travel by helicopter. 

  • To transport by helicopter. 

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