calloused vs scaly

calloused

scaly

adj
  • Resembling scales, laminae, or layers. 

  • Covered or abounding with scales. 

  • Composed of scales lying over each other. 

noun
  • The scaly yellowfish (Labeobarbus natalensis). 

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