improve vs school

improve

verb
  • To make (something) better; to increase the value or productivity (of something). 

  • To become better. 

school

verb
  • To control, or compose, one’s expression. 

  • To educate, teach, or train (often, but not necessarily, in a school). 

  • To form into, or travel in, a school. 

  • To defeat emphatically, to teach an opponent a harsh lesson. 

noun
  • The time during which classes are attended or in session in an educational institution. 

  • An establishment offering specialized instruction, as for driving, cooking, typing, coding, etc. 

  • The canons, precepts, or body of opinion or practice, sanctioned by the authority of a particular class or age. 

  • A group of fish or a group of marine mammals such as porpoises, dolphins, or whales. 

  • An educational institution providing primary and secondary education, prior to tertiary education (college or university). 

  • An institution dedicated to teaching and learning; an educational institution. 

  • The followers of a particular doctrine; a particular way of thinking or particular doctrine; a school of thought. 

  • At Eton College, a period or session of teaching. 

  • The room or hall in English universities where the examinations for degrees and honours are held. 

  • A multitude. 

  • An art movement, a community of artists. 

  • Within a larger educational institution, an organizational unit, such as a department or institute, which is dedicated to a specific subject area. 

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