sawdust vs swarf

sawdust

noun
  • The fine particles (dust) created by sawing wood or other material. 

verb
  • To sprinkle with sawdust. 

swarf

noun
  • The waste chips or shavings from an abrasive activity, such as metalworking, a saw cutting wood, or the use of a grindstone or whetstone. 

  • A particular waste chip or shaving. 

verb
  • To grind down. 

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