Mask vs Twin or Double

Mask

Masks represent the personas we wear, deception (others' or our own), and the hidden self behind public appearances. Wearing a mask suggests concealing your true self. Removing a mask represents authenticity and vulnerability. A mask falling off unexpectedly indicates fear of being exposed. Others wearing masks may reflect distrust or the recognition that people aren't showing their true faces.

Twin or Double

Seeing your double, twin, or doppelganger in a dream represents confrontation with another aspect of yourself — perhaps a side you don't normally acknowledge. This can represent inner conflict between two desires, the gap between who you are and who you present to the world, or the emergence of an undeveloped part of your personality seeking integration.

Mask

Directly represents the Jungian persona and the relationship between authentic self and social face

Twin or Double

Related to the shadow archetype but more specific — represents a recognizable alternate self