cutlass vs razor blade

cutlass

noun
  • A similarly shaped tool; a machete. 

  • A short sword with a curved blade, and a convex edge; once used by sailors when boarding an enemy ship. 

verb
  • To cut back (vegetation) with a cutlass. 

razor blade

noun
  • A thin piece of steel with a sharp edge that can be fitted into a razor. 

  • A replaceable cartridge in which razor blades are set, fitted into a razor. 

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