braise vs steam up

braise

verb
  • To cook in a small amount of liquid, in a covered pan, somewhere between steaming and boiling. 

noun
  • A sauce used for braising. 

  • A dish (usually meat) prepared by braising. 

  • Pagellus bogaraveo, syn. Pagellus centrodontus (sea bream) 

steam up

verb
  • To become steamy. 

  • To become coated with condensation. To fog up. 

  • To bring (a steam boiler) up to working steam pressure. 

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