acrylic vs tooth enamel

acrylic

noun
  • A thick sheet of plastic. 

  • A painting executed using such a paint. 

  • A liquid coating system based on an acrylic resin. 

  • An acrylic resin. 

  • A paint containing an acrylic resin. 

adj
  • Derived from acrylic acid or acrylonitrile. 

  • Containing an acrylic resin. 

tooth enamel

noun
  • The hard, mineralised substance that makes up the visible part of teeth. 

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