coping saw vs reciprocating saw

coping saw

noun
  • A thin-bladed saw for cutting wood into curved shapes. 

reciprocating saw

noun
  • A sawzall; a tool frequently used for demolition 

  • A power saw which moves the blade back and forth. 

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