careless vs questioning

careless

adj
  • Not giving sufficient attention or thought, especially concerning the avoidance of harm or mistakes. 

  • Not concerned or worried (about). 

questioning

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

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

noun
  • Interrogation. 

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

  • The act of challenging, wondering, and doubting. 

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