heavy metal vs rock

heavy metal

noun
  • A genre descended from rock music, characterized by massive sound, highly amplified distortion, and overall loudness, often with extended guitar solos, and lyrics that involve aggressive or fantastic imagery. 

  • Any metal that has a specific gravity greater than about 5, especially one, such as lead, that is poisonous and may be a hazard in the environment. (There are many different definitions of what counts as a heavy metal; see Heavy metals for a discussion.) 

  • Great influence or power. 

  • guns or shot of large size. 

rock

noun
  • A style of music characterized by basic drum-beat, generally 4/4 riffs, based on (usually electric) guitar, bass guitar, drums, and vocals. 

  • An extremely conservative player who is willing to play only the very strongest hands. 

  • Something that is strong, stable, and dependable; a person who provides security or support to another. 

  • A mistake. 

  • Synonym of stone. 

  • The naturally occurring aggregate of solid mineral matter that constitutes a significant part of the earth's crust. 

  • A precious stone or gem, especially a diamond. 

  • A cricket ball, especially a new one that has not been softened by use 

  • Distaff. 

  • The flax or wool on a distaff. 

  • A large hill or island having no vegetation. 

  • A basketball. 

  • An act of rocking; a rocking motion; a sway. 

  • A type of confectionery made from sugar in the shape of a stick, traditionally having some text running through its length. 

  • A mass of stone projecting out of the ground or water. 

  • Any natural material with a distinctive composition of minerals. 

  • An Afrikaner. 

  • An unintelligent person, especially one who repeats mistakes. 

  • A crystallized lump of crack cocaine. 

  • The striped bass. 

  • A boulder or large stone; or (US, Canada) a smaller stone; a pebble. 

  • A lump or cube of ice. 

  • The huss or rock salmon. 

  • A closed hand (a handshape resembling a rock), that beats scissors and loses to paper. It beats lizard and loses to Spock in rock-paper-scissors-lizard-Spock. 

  • A crystal used to control the radio frequency. 

verb
  • To move gently back and forth. 

  • To play, perform, or enjoy rock music, especially with a lot of skill or energy. 

  • To thrill or excite, especially with rock music. 

  • To sway one's body as a stim. 

  • To wear (a piece of clothing, outfit etc.) successfully or with style; to carry off (a particular look, style). 

  • to make love to or have sex with. 

  • To be very favourable or skilful; excel; be fantastic. 

  • To do something with excitement yet skillfully. 

  • To sway or tilt violently back and forth. 

  • To disturb the emotional equilibrium of; to distress; to greatly impact (most often positively). 

  • To cause to shake or sway violently. 

  • To do well or to be operating at high efficiency. 

  • To be washed and panned in a cradle or in a rocker. 

  • to be cool. 

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