bracing vs roborative

bracing

adj

  • Invigorating or stimulating. 

noun

  • A form of the military attention stance. 

  • That which braces. 

  • A brace. 

roborative

adj

  • Giving strength; invigorating. 

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