The term “hardcore” is used to describe a subgenre of punk and heavy metal. Hardcore typically has a faster tempo than traditional punk or rock music. It also often has a much harder, more abrasive sound. The genre arose from the hardcore punk scene in New York City around 1980, evolving out of bands like Black Flag, Bad Brains, and Dead Kennedys.
There are some arguments that say that the term “hardcore” was an invention of MTV and not coined by the musicians themselves.