Unconventional is a related term of unnatural.
As adjectives the difference between unconventional and unnatural
is that unconventional is not adhering to convention or accepted standards while unnatural is not natural; supernatural or artificial.
As a noun unconventional
is something or someone that is unconventional.
unconventional
English
Adjective
(
en adjective)
Not adhering to convention or accepted standards
Out of the ordinary
Atypical
Noun
(
en noun)
Something or someone that is unconventional.
unnatural
English
Adjective
(
en adjective)
Not natural; supernatural or artificial.
Not occurring in the environment or atmosphere
Going against nature; perverse.
Antonyms
* natural