TinyPlot

A TinyPlot is simply a side plot which allows players to develop their characters. Generally speaking, a TinyPlot (also called a TP in the online vernacular of the game) does not affect the entire game.

Minor RP
Minor RP (RP means Role-Play) is a term which refers to role playing between characters which is not directly overseen by a staff member. It has even less global impact than a TP.

Plot RP
Plot RP is a TP which falls into a singular plot arc, and which is almost always overseen by a staff member.

Major RP
Major RP is a TP with potentially global consequences. By definition, it must always be overseen and initiated by at least one staff member (but typically multiple staffers will be involved, though this is not a requirement for Major RP).

Shifting RP
Any RP which seems to shift from one kind to another. For example: minor to plot, or minor to major.