That's called the mood. I say to someone. Hey, what's up think so I'm gonna move well, why are you in a mood? well I had this thing happen to me five days ago and I'm having one long emotional reaction if you keep that same emotional reaction going on for weeks or months That's called temperament. Why is he so bitter? I don't know. Let's ask him. Why is he so bitter? Why are you bitter? Well, I had this thing happened to me nine months ago And if you keep that same emotional reaction going on for years on end that's called a personality trait