controlled vs headstrong

controlled

adj
  • Resulting from a comparison with control samples; including a comparison (control) group. (describing clinical trials) 

  • Under the control of the specified entity. 

  • Inhibited or restrained in one's words and actions. 

headstrong

adj
  • Determined to do as one pleases, and not as others want. 

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