air out vs exhale

air out

verb
  • To expose to air; to leave open or spread out, as to allow odor or moisture to dissipate. 

  • To throw passes, especially long and high passes. 

  • To discuss in the open; to address an issue or conflict that has long been avoided. 

exhale

verb
  • To emit (a vapour, an odour, etc.). 

  • To draw out; to cause to be emitted in vapour. 

  • To pass off in the form of vapour; to emerge. 

  • To expel (something, such as tobacco smoke) from the lungs by action of the diaphragm. 

  • To expel air from the lungs through the nose or mouth by action of the diaphragm, to breathe out. 

noun
  • An exhalation. 

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