old soldier vs rookie

old soldier

noun
  • Someone with a lot of experience in something; an old hand. 

  • A former soldier, or one who has served for a long time. 

  • The butt of a smoked cigar, or an empty bottle of liquor. 

  • A bottle whose contents are drunk at a single sitting. 

rookie

adj
  • non-professional; amateur 

noun
  • A type of firecracker, used by farmers to scare rooks. 

  • A novice. 

  • An athlete either new to the sport or to a team or in his first year of professional competition, especially said of baseball, basketball, hockey and American football players. 

  • An inexperienced recruit, especially in the police or armed forces. 

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