The act of accompanying, keeping company with, or being a companion to someone; providing companionship.
From companion (from Latin com- 'with' + panis 'bread'—literally one who shares bread) + -ing. The verb form emphasizes the active role of being with someone.
The root of 'companion' is 'sharing bread'—this shows that for most of human history, companionship meant the sacred act of eating together, which bonded people as deeply as family!
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