What is an 8 movie series called?

Excuse me, could you possibly elaborate on the concept of an "8 movie series"? Are you referring to a set of eight films that are interconnected in some way, such as through a shared universe, characters, or overarching narrative? Or perhaps it's a collection of eight films that share a similar theme or genre? I'm curious to understand the context in which you're asking this question, as there are many different types of film series out there. Additionally, if you have a specific example in mind, that would be helpful in providing a more accurate answer.