naive vs unguarded

naive

adj
  • Lacking worldly experience, wisdom, or judgement; unsophisticated. 

  • Produced in a simple, childlike style, deliberately rejecting sophisticated techniques. 

  • Intuitive; designed to follow the way ordinary people approach a problem. 

  • Not having been exposed to something. 

noun
  • A naive person; a greenhorn. 

unguarded

adj
  • Displaying a lack of caution or thought. 

  • Having no guard or protection; vulnerable. 

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