drain away vs poof

drain away

verb
  • To diminish over time; to disappear or leak out gradually. 

poof

verb
  • To vanish or disappear. 

  • To break wind; to fart. 

noun
  • A male homosexual, especially one who is effeminate. 

  • The product of flatulence, or the sound of breaking wind. 

intj
  • Onomatopoeia indicating a small explosion with a cloud of smoke; as caused by a deflating object, or a magical disappearance. 

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