preternatural vs nonnatural

preternatural and nonnatural both are adjectives.

Word	Noun	Adjective	Verb	Adverb
preternatural	No	Yes	No	No
nonnatural	No	Yes	No	No

As adjectives, preternatural and nonnatural are synonyms defined as:

preternatural and nonnatural: existing outside of or not in accordance with nature

Other synonyms of preternatural include otherworldly, transcendental.

preternatural (adjective)	nonnatural (adjective)
surpassing the ordinary or normal	existing outside of or not in accordance with nature
existing outside of or not in accordance with nature