lector vs textbook

lector

noun
  • A public lecturer or reader at some universities. 

  • A person doing voice-over translation of foreign films, especially in Eastern European countries. 

  • A lay person who reads aloud certain religious texts in a church service. 

  • A person who reads aloud to workers to entertain them, appointed by a trade union. 

verb
  • To do a voice-over translation of a film. 

textbook

noun
  • A coursebook, a formal manual of instruction in a specific subject, especially one for use in schools or colleges. 

adj
  • Having the typical characteristics of some class of phenomenon, so that it might be included as an example in a textbook. 

  • Of or pertaining to textbooks or their style, especially in being dry and pedagogical; textbooky, textbooklike. 

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