Is there general agreement among authors about the differences among a series, a serial, a sequel, or a a universe, or any of the other words that could be used to describe more than one story that uses the same or many of the same characters.
For example, if there's a story that follows the early years (say through middle school) of a character, then another story that follows that character through high school (but at least some of the characters change), then another story for college (where many of the characters are different), then one or more stories for the rest of the character's life - what is the name if you consider all of the stories together (one main character throughout).
And how does that differ from several stories set in the same place, but all the characters change (including the main character), but characters may appear in more than one of the stories.