blimp vs helicopter

blimp

noun
  • An airship constructed with a non-rigid lifting agent container. 

  • Any large airborne inflatable. 

  • A person similar to the cartoon character Colonel Blimp; a pompous, reactionary British man. 

  • A soundproof cover for a video camera. 

  • An obese person. 

verb
  • To fit (a video camera) with a soundproof cover. 

  • To expand like a blimp or balloon; to become fat. 

helicopter

noun
  • 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. 

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

  • A whirling trick performed with devil sticks. 

  • A dragonfly. 

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

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 blimp and helicopter occurred in a corpus of books? (source: Google Ngram Viewer )