firewood vs scald

firewood

noun
  • Wood intended to be burned, typically for heat. 

scald

noun
  • A burn, or injury to the skin or flesh, by hot liquid or steam. 

verb
  • To heat almost to boiling. 

  • To burn with hot liquid. 

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