Core music generally refers to metal core, death core, grind core, electronic core, etc. Grindcore is strictly a separate style of music and cannot be included in metal. Grindcore also has branches, including blood grindcore, shit grindcore, noise grindcore, electronic grindcore, German-style grindcore, American-style grindcore, high-speed grindcore, traditional grindcore, etc. The roar of core music is very powerful (excluding grindcore), you will know if you listen to it, such as All Shall Perish, a death core band, and The Devil Wears Prada, which is metal core. And the melody of core music is also better. And some die-hard metal fans don't recognize core music at all (excluding grindcore). Comparing heavy metals, it is easy to draw the comparison. Black metal, RIFF is very evil, the lead singer usually sings with a black voice, painted with a corpse face, and uses anti-Christ and Satanism as themes. You can listen to Mayhem's Funeral Fog for comparison. Death metal is very brutal, and the lead singer usually sings with a low growl or beastly roar, while in the core genre, he roars. Sometimes accompanied by throat clearing, often seen in metalcore. Progressive metal = =, I’m not sure, sorry. Grindcore. . . . Each type of grindcore has different characteristics, but grindcore is a very free music, with songs ranging from a few seconds to a few minutes in length. Blood grinding, color grinding, often use treated water pipes to sing, just like a toilet, which is unbearable, such as Cock And Ball Tortured (German style grinding), and Last Days Of Humanity (blood grinding). Traditional grindcore is similar to death metal, but death metal focuses on technology, while grindcore focuses on auditory effects. The drums of grindcore are fast, and the second difference is the length of the music. Grindcore has a shorter time. You can refer to Rotten Sound (grindcore) and Cannibal Corpse (death metal) to distinguish them. As for some other styles of grindcore, I won’t say much here. I hope LZ will listen to it for himself, which will help to distinguish.