aerate vs let air out

aerate

verb
  • To supply with oxygen or air. Example: "Blood is aerated in the lungs." 

  • To incorporate a gas, especially oxygen or air, into a solid or semisolid material. Example: "The mousse was aerated by beating rapidly." 

  • To bubble or sparge with a gas, especially oxygen or air. Example: "The drink was aerated with carbon dioxide, making it fizzy." 

  • To bubble or sparge with a gas, especially oxygen or air. Example: "The microbial growth medium was aerated at a rate of 5 litres per minute." 

let air out

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