As adjectives the difference between enarched and unarched
is that enarched is (heraldry) bent into a curve; said of a bend or other ordinary while unarched is not arched.
enarched
English
Adjective
(
-)
(heraldry) Bent into a curve; said of a bend or other ordinary.
(
webster)
unarched
English
Adjective
(-)
Not arched.