lector vs workbook

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. 

workbook

noun
  • A book, used by a student, in which answers and workings may be entered besides questions and exercises. 

  • A collection of spreadsheets stored in the same file. 

  • A book, used by a business, containing a record of work to be done, or work completed. 

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