rocky vs sturdy

rocky

adj
  • Like a rock; rigid, solid. 

  • In the style of rock music. 

  • Abounding in, or full of, rocks; consisting of rocks. 

  • Having a habitat around or on rocks. 

  • Easily rocked; unstable. 

  • Encountering many problems; difficult, troubled; also, in danger or distress. 

  • Of a person: ill, or unsteady (for example, as a result of a shock). 

sturdy

adj
  • Solid in structure or person. 

  • Resolute, in a good sense; or firm, unyielding quality. 

  • Of firm build; stiff; stout; strong. 

noun
  • A disease caused by a coenurus infestation in the brain of an animal, especially a sheep or canid; coenurosis. 

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