analeptic vs corroborant

analeptic

adj
  • That restores or stimulates health. 

  • Of or relating to analepsis (a form of flashback). 

noun
  • A restorative or stimulative medication, especially one used to overcome depression. 

corroborant

adj
  • strengthening; supporting; corroborating 

noun
  • Anything that gives strength or support; a tonic. 

  • A piece of corroborating evidence. 

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