bookshelf vs desk

bookshelf

noun
  • A shelf or shelves for storing books for easy visual reference. 

desk

noun
  • A table, frame, or case, in past centuries usually with a sloping top but now usually with a flat top, for the use of writers and readers. It often has a drawer or repository underneath. 

  • A reading table or lectern to support the book from which the liturgical service is read, differing from the pulpit from which the sermon is preached; also (especially in the United States), a pulpit. Hence, used symbolically for the clerical profession. 

  • A department tasked with a particular topic or focus in certain types of businesses, such as newspapers and financial trading firms. 

verb
  • To equip with a desk or desks. 

  • To shut up, as in a desk; to treasure. 

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