air vs expression

air

noun
  • A feeling or sense. 

  • understood as a gaseous mixture of nitrogen, oxygen, and various trace gases. 

  • The apparently open space above the ground which this substance fills, (historical) formerly thought to be limited by the firmament but (meteorology) now considered to be surrounded by the near vacuum of outer space. 

  • understood as a particular local substance with supposed effects on human health. 

  • A song, especially a solo; an aria. 

  • A jump in which one becomes airborne. 

  • The substance constituting Earth's atmosphere 

  • A sense of poise, graciousness, or quality. 

  • Nothing; absence of anything. 

  • Publicity. 

  • A breeze; a gentle wind. 

  • A television or radio signal; (by extension) media broadcasts in general. 

  • An air conditioner or the processed air it produces. 

  • understood as one of the four elements of the ancient Greeks and Romans. 

  • Pretension; snobbishness; pretence that one is better than others. 

verb
  • To be broadcast. 

  • To broadcast (a television show etc.). 

  • To discuss varying viewpoints on a given topic. 

  • To bring (something) into contact with the air, so as to freshen or dry it. 

  • To ignore (a person). 

  • To let fresh air into a room or a building, to ventilate. 

expression

noun
  • The action of expressing thoughts, ideas, feelings, etc. 

  • A specific blend of whisky. 

  • A colloquialism or idiom. 

  • An arrangement of symbols denoting values, operations performed on them, and grouping symbols. 

  • The process of translating a gene into a protein. 

  • A facial appearance usually associated with an emotion. 

  • (manufacturing) The act of pressing or squeezing out. 

  • A particular way of phrasing an idea. 

  • A piece of code in a high-level language that returns a value. 

  • The tone of voice or sound in music. 

  • emotional involvement or engagement in a text read aloud rendered by the voice of the reciter or the reader 

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