acoustic vs hearing

acoustic

noun
  • The properties or qualities of a room or building that determine how sound is transmitted in it. 

  • A medicine or other agent to assist hearing. 

adj
  • Utilizing sound energy in its operation. 

  • (of building materials) Used for soundproofing or modifying sound. 

  • (of an explosive mine or other weapon) Able to be set off by sound waves. 

  • Naturally producing or produced by an instrument without electrical amplification or the need thereof. 

hearing

noun
  • The sense used to perceive sound. 

  • A proceeding at which discussions are heard. 

  • The act by which something is heard. 

  • A legal procedure done before a judge, without a jury, as with an evidentiary hearing. 

adj
  • Able to hear, as opposed to deaf. 

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