careful vs true-hearted

careful

adj
  • Conscientious and painstaking; meticulous. 

  • Taking care; attentive to potential danger, error or harm; cautious. 

true-hearted

adj
  • Having a faithful heart; honest; sincere; not faithless or deceitful. 

How often have the words careful and true-hearted occurred in a corpus of books? (source: Google Ngram Viewer )