capitation vs donation

capitation

noun
  • A donation made to an educational institution to obtain admission. 

  • Performing a headcount; the counting of people. 

  • A system of remuneration for providers of health care, in which providers enroll patients as permanent clients and receive a fixed periodic payment for each enrollee. 

  • A poll tax. 

donation

noun
  • The act of giving or bestowing; a grant. 

  • A voluntary gift or contribution for a specific cause. 

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