What is the Khabar? How is it different than Sira, Akbar, Sunnah, & Hadith in general?

I know this must be a basic question so please forgive my ignorance, but I'm unfamiliar with the textual difference/similarities among the texts. I was able to discern that Khabar means "historical reports" -- but I couldn't tell if this is a subset of Hadith and how the other texts (Sira, Akbar, & Sunnah) relate to/branch off it -- if at all. Can someone please clarify this for me, please? I think a diagram would help me to visualize their various roles, but I was unable to locate one. I couldn't even find a for "khabar" on google really.