recruitment vs what one is into

recruitment

noun
  • Opening of collapsed lung alveoli by means of controlled increase in transpulmonary pressure using mechanical ventilation. (treatment strategy for ARDS) 

  • A physical condition of the inner ear that leads to reduced tolerance of loudness, commonly occurring in those with hearing loss due to cochlear damage. 

  • The full aeration of a lung. 

  • A style or process of recruiting. 

  • The process or art of finding candidates for a post in an organization, or recruits for the armed forces. 

  • The addition of new adult or breeding-age individuals (recruits) to a population. 

what one is into

How often have the words recruitment and what one is into occurred in a corpus of books? (source: Google Ngram Viewer )