I went on a supersleuth investigation on the internets and found out that screamo comes from emo, only with a singer who screams or something. What does emo ( already a retarded label. What, is other music not emotionally charged? ) have to do with heavy metal?
I don't see the '-core' thing at all for DEP, especially after the first album. On the first release they sounded like deadguy clones which I guess is some sort of noise uhh... punk thing?