ankylosed vs ironbound

ankylosed

adj

  • Stiff, cramped, rigid. 

  • Stiffened or inflexible. 

ironbound

adj

  • Rigid, unyielding. 

  • Bound with iron, ironclad. 

  • Rugged. 

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