Is Screamo Hardcore?

Got into an argument with a buddy the other day for saying that Screamo can technically classify under the Hardcore umbrella as emotional hardcore is a descendant

I guess my main examples would be beat down metalcore that’s emo leaning like On Broken Wings or more chaotic shit like Joshua Fit for Battle. I don’t want to be a nerd and get all hurt over specific labels, but I would appreciate some understanding of the difference the separates them besides vocals