I'm sure some sort of distinguishing characteristics can be recommended.
It's fake news when the only ramification is general public exposure to false belief. It becomes "media evidence" when the ramifications affect the conduct of government actors against members of the public. Zimmerman was prosecuted becuase "fake news" graduated to the level of "media evidence." Pam Bodi and Governor Christ acted on account of the media evidence, and decided that an innocent man had to be punished at least by process, and maybe by criminal conviciton.
I generally hate labels. They lead to waste of time at best, and often result in critical confusion, where people using the same label literally mean opposite things.
"Going to be held to account" is a pet peeve of mine. I think, when people in governmnet say that, it is a euphamism for "the truth will come out." That's it - telling the truth is being held to account. Because the truth exposes the players as liars, cheats, killers and thieves.
SUcks because I like me some Pam Bondi.