call up vs recruit

call up

verb
  • To select e.g. to a sports squad. 

  • To summon (someone) to report for military service. 

  • To retrieve from personal or computer memory. 

  • To call on the telephone. 

noun
  • An order to report for military service. 

recruit

verb
  • To enroll or enlist new members or potential employees on behalf of an employer, organization, sports team, the military, etc. 

  • To become an adult or breeding-age member of a population. 

  • To prompt a protein, leucocyte. etc. to intervene in a given region of the body. 

  • To supply with new men, as an army; to fill up or make up by enlistment; also, to muster 

noun
  • A hired worker 

  • A person enlisted for service in the army; a newly enlisted soldier. 

  • A new adult or breeding-age member of a certain population. 

  • A supply of anything wasted or exhausted; a reinforcement. 

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