Is there any more layman explaination like - cant understand most of it:

The first three types of death are known as timely death(kalamarana), the last as untimely death (akalamarana). An oil lamp, for example, may be extinguished due to the exhaustion of the wick, the exhaustion of the oil, the simultaneous exhaustion of both, or some extraneous cause, like a gust of wind.

I mean some wiki with layman explaination for other stuffs