conductor vs soloist

conductor

noun
  • A person who conducts an orchestra, choir or other music ensemble; a professional whose occupation is conducting. 

  • One who conducts or leads; a guide; a director. 

  • An ideal of a ring that measures how far it is from being integrally closed 

  • A grooved sound or staff used for directing instruments, such as lithontriptic forceps; a director. 

  • A person who takes tickets on public transportation and also helps passengers. 

  • Something that can transmit electricity, heat, light, or sound. 

  • A leader. 

soloist

noun
  • A person who performs a solo. 

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