promising vs sanguine

promising

adj
  • Encouraging and inspiring confidence. 

  • Showing promise, and likely to develop in a desirable fashion. 

  • a promising young apprentice 

noun
  • The act of making a promise. 

sanguine

adj
  • Anticipating the best; optimistic; confident; full of hope. 

  • Characterized by abundance and active circulation of blood. 

  • Having the colour of blood; blood red. 

  • Warm; ardent. 

noun
  • A tincture, seldom used, of a blood-red colour (not to be confused with murrey). 

  • Red crayon. 

  • Blood colour; red. 

  • Bloodstone. 

  • Anything of a blood-red colour, as cloth. 

verb
  • To stain with blood; to impart the colour of blood to; to ensanguine. 

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