credulous vs questioning

credulous

adj
  • Believed too readily. 

  • Excessively ready to believe things; gullible. 

questioning

noun
  • Interrogation. 

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

  • 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 credulous and questioning occurred in a corpus of books? (source: Google Ngram Viewer )