Grunge is a subgenre of alternative rock that emerged in the mid-1980s in the Pacific Northwest region of the United States, particularly in Seattle, Washington. Grunge is characterized by its heavy, distorted guitars, dark and brooding lyrics, and a raw, lo-fi production style. Some of the most prominent grunge bands include Nirvana, Soundgarden, Pearl Jam, and Alice in Chains.
Screamo is a subgenre of emo music that emerged in the late 1990s in the United States. Screamo is characterized by its intense and chaotic sound, which often features screamed vocals, heavy distortion, and a fast tempo. Some of the most prominent screamo bands include Orchid, Saetia, and Pg.99.
While both grunge and screamo are subgenres of rock music, they have distinct sounds and characteristics. Grunge is typically heavier and darker, while screamo is more intense and chaotic.