air force vs squad

air force

noun
  • A unit in the U.S. Air Force larger than a division but smaller than a command. 

  • A branch of the military mainly devoted to air warfare, as opposed to (land) army and navy. 

squad

noun
  • A unit of tactical military personnel, or of police officers, usually of about ten members. 

  • Sloppy mud. 

  • One's friend group, taken collectively; one's peeps. 

  • A group of potential players from whom a starting team and substitutes are chosen. 

  • A collective noun for a group of squid. 

verb
  • To act as part of, or on behalf of, a squad. 

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