is a specific kind of: quality.

is a broader term that covers: artlessness, ingenuousness, innocence, naturalness | credulousness, gullibility | simple mindedness, simpleness, simplicity.

is the opposite of: mundaneness, mundanity, sophistication, worldliness.

derivation: naive, uninitiate, uninitiated | naive, unenlightened, uninstructed | naive | naif, naive.