able vs knowing

able

adj
  • Gifted with skill, intelligence, knowledge, or competence. 

  • Having the necessary powers or the needed resources to accomplish a task. 

  • Legally qualified or competent. 

  • Free from constraints preventing completion of task; permitted to; not prevented from. 

  • Capable of performing all the requisite duties; as an able seaman. 

noun
  • The letter "A" in Navy Phonetic Alphabet. 

knowing

adj
  • Possessing knowledge or understanding; knowledgeable, intelligent. 

  • The ability to know something without being taught. 

  • Suggestive of private knowledge or understanding. 

  • Deliberate, wilful. 

  • 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. 

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