Crossover is scorchingly fast, with simple metallic riffs and more punk-influenced vocals. It is more punky than typical thrash metal, but it is more metallic than most hardcore punk (outside of grindcore).
Crossover Thrash is similar to Metalcore, but there are differences. Crossover is faster, punkier, and overall not as heavy, with shouted vocals; while metalcore is more mid-tempo and heavier, with screamed or growled vocals.
Bands include: Dirty Rotten Imbeciles, Corrosion of Conformity, Stormtroopers of Death, Suicidal Tendencies, and What Happens Next?
Crossover Thrash is often blindingly fast, with simple, metallic riffing, and punk-influenced shouting. Crossover is simpler, punkier, and not as heavy as typical thrash metal; but heavier and faster than typical hardcore punk.
Crossover and Metalcore are similar, but different, as both are hardcore punk - heavy metal fusions. But Crossover is faster and not as heavy, with punky shouted vocals; while metalcore is more mid-tempo and heavier, with screamed and/or growled vocals.