Everything must be
Correct in every sense of
The definition

Death: A restful sleep, when you don't bother to get up.

Quietness: A state of appearing tranquil, when mind is too tired/exasperated/angry. But, which generate gentle ripples that is kept alive through out this state of mind and ready to blow wildely at the slightest provocation.

Nature: The wildest, beautiful, difficult to create by man phenomenon.  Even a tiniest embryo study when penned down, might result in a book as big as a t-rex.

Insomnia: a rejection of a proposition between eyes and brain,  if otherwise may have ended up curled in bed sleeping together.