As adjectives the difference between unoiled and unpiled
is that unoiled is not having been oiled while unpiled is not piled.
As a verb unoiled
is past tense of unoil.
unoiled
English
Etymology 1
Adjective
(-)
Not having been oiled.
Etymology 2
Verb
(head)
(unoil)
unpiled
English
Adjective
(-)
Not piled.