Individually-created thoughtform worlds also exist. One of my friends in college had a highly-detailed inner world with millions of inhabitants, and, although she described it as "fictional", she experienced it as a literal place. I (Marlana) have an imaginary country -- I prefer the term ideal country insofar as it is an abstract representation.

Those are the kind of experiences I call subjective-- regardless of whether or not it's real in a literal and verifiable sense, it's a reality to you. I'm generally of the school of thought that "what does it mean?" is a less important question to ask than "what does it mean to you?"