reparative vs roborant

reparative

adj
  • Tending to or intended to repair. 

  • Of, pertaining to, or being a reparation. 

noun
  • That which repairs. 

roborant

adj
  • That strengthens or energizes. 

noun
  • A restorative tonic. 

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