doctor's vs workstead

doctor's

noun
  • A doctor’s surgery. 

workstead

noun
  • A laboratory. 

  • Any place, such as a workshop, office, studio, or garage, set up where work can be performed; a workstation. 

  • A place of employment; workplace. 

How often have the words doctor's and workstead occurred in a corpus of books? (source: Google Ngram Viewer )