Categorize the evolution of events and objects into four elements

The development of an event or object is categorized by the passage of time. 
Elements: Appearance, Growing, Reaping, Hiding

Four elements of evolution of events

 

In the flow of things (events or objects),
first arise and appear,
grows over time,
grows to a certain point, declines,
decline and eventually disappear.
This process is summarized in the table above.