approbation vs brevet

approbation

noun
  • The act of approving; an assenting to the propriety of a thing with some degree of pleasure or satisfaction; approval, sanction, commendation or official recognition. 

brevet

noun
  • An authoritative grant or mark of recognition; a seal of approval. 

  • An organized, long-distance bicycle ride — not a race, but a test of endurance — which follows a designated but unmarked route passing through check points. 

  • A warrant from the government, granting a privilege, title, or dignity, as in France. 

  • A military document entitling a commissioned officer to hold a higher rank temporarily, but without an increase in pay. 

verb
  • To promote by brevet. 

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