workbench vs worktop

workbench

noun
  • A sturdy bench or table at which manual work is done by a carpenter, machinist, etc. 

worktop

noun
  • A surface, usually resting on cupboards or drawers that can be used to work on. Usually in a kitchen. 

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