As adjectives the difference between nontraditional and unconventional
is that nontraditional is not traditional; not related to tradition while unconventional is not adhering to convention or accepted standards.
As a noun unconventional is
something or someone that is unconventional.
nontraditional
English
Alternative forms
* non-traditional
Adjective
(
en adjective)
Not traditional; not related to tradition.
Innovative; new; daring.
Derived terms
* nontraditionally
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.