I define it exactly like the below; and that's why I love it so much, reading dry text doesn't do it for me - that's what academic papers are for - I love colourful language and visual communication to describe the mundane.

Rather than;

Jesus was crucified on the cross to give people eternal life

I prefer;

He was lifted for our sins and conquered death so that we may live

Definitions:

Creative nonfiction is a genre of writing that uses literary styles and techniques to create factually accurate narratives. Wikipedia

Creative Nonfiction magazine defines the genre simply, succinctly, and accurately as “true stories well told.”

Within the world of creative writing, the term creative nonfiction encompasses texts about factual events that are not solely for scholarly purposes. ... This genre of writing incorporates techniques from fiction and poetry in order to create accounts that read more like story than a piece of journalism or a report.