cadre vs personnel

cadre

noun
  • The core of a managing group, or a member of such a group. 

  • The framework or skeleton upon which a new regiment is to be formed; the officers of a regiment forming the staff. 

  • A small group of people specially trained for a particular purpose or profession. 

  • A frame or framework. 

personnel

noun
  • Collection of people in an organization, such as employees and office staff, members of the military, etc. 

  • A human resources department. 

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