asking vs questioning

asking

noun
  • The act or process of posing a question or making a request. 

  • The marriage banns. 

  • A request, or petition. 

adj
  • That asks; that expresses a question or request. 

questioning

noun
  • The action of asking questions; a survey; an inquiry. 

  • Interrogation. 

  • The act of challenging, wondering, and doubting. 

adj
  • Unsure of one's sexual orientation and/or gender identity. 

  • Characterized by questions, inquisitiveness, doubt, or wonder. 

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