catling vs sabre-toothed tiger

catling

noun
  • catgut; a catgut string 

  • A double-edged, sharp-pointed dismembering knife. 

sabre-toothed tiger

noun
  • Any of numerous species of extinct cat-like mammals, of the Machairodontinae subfamily of the Felidae. 

How often have the words catling and sabre-toothed tiger occurred in a corpus of books? (source: Google Ngram Viewer )