وحدة

Noun

 * 1) unit a standard measure of a quantity
 * 2) unit a group within an organization that has been assigned a specific duty or function
 * 3) unit; module part of a book or educational course
 * 4) union, unity; oneness the state of being united as one
 * 5) loneliness, solitude  a feeling of depression resulting from being alone

Etymology 1
From.

Noun

 * 1) unit

Etymology 2
From.

Noun

 * 1) loneliness