As nouns the difference between armlessness and artlessness
is that armlessness is the state or condition of being armless; lack of arms while artlessness is the state or quality of being artless.
armlessness
English
Noun
(-)
The state or condition of being armless; lack of arms. artlessness
English
Noun
(-)
the state or quality of being artless
the state or quality of being innocent; naivete