knowing vs thick-skinned

knowing

adj
  • Deliberate, wilful. 

  • The ability to know something without being taught. 

  • Suggestive of private knowledge or understanding. 

  • Possessing knowledge or understanding; knowledgeable, intelligent. 

  • Shrewd or showing clever awareness; discerning. 

  • Demonstrating knowledge of what is in fashion; stylish, chic. 

prep
  • Given my knowledge about someone or something. 

noun
  • The act or condition of having knowledge. 

thick-skinned

adj
  • Insensitive to the feelings of others; callous. 

  • Having a thick skin. 

  • Not easily offended. 

How often have the words knowing and thick-skinned occurred in a corpus of books? (source: Google Ngram Viewer )