overedge vs serge

overedge

verb
  • To overlock. 

serge

verb
  • To overlock. 

noun
  • A type of worsted cloth. 

  • A garment made of this fabric. 

  • A large wax candle used in some church ceremonies. 

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