'Communion' originates from Latin, specifically the word 'communio,' where 'com-' meant 'together' and 'unio' meant 'union.'

'Communio' transformed into the Old French word 'communion,' and eventually became the modern English word 'communion' through Middle English.

Initially, it meant 'a mutual participation,' but over time it evolved into its current meanings of 'intimate sharing' and 'Christian sacrament.'