airborne vs in flight

airborne

noun
  • Military infantry intended to be transported by air and delivered to the battlefield by parachute or helicopter. 

adj
  • Fitted to an aircraft. 

  • In flight. 

  • Transported by air in an aircraft. 

  • In or carried by the air. 

in flight

prep
  • Flying, making a flight, as opposed to being on the ground. 

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