cinder vs soot

cinder

noun
  • Partially or mostly burnt material that results from incomplete combustion of coal or wood etc. 

  • An ember. 

  • Slag from a metal furnace. 

verb
  • To cover with cinders. 

  • To reduce to cinders. 

soot

noun
  • Fine black or dull brown particles of amorphous carbon and tar, produced by the incomplete combustion of coal, oil etc. 

verb
  • To cover or dress with soot. 

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