In simple terms, ‘communion’ means a sharing together in something that people hold in common. In present-day language, ‘fellowship’ is the word usually used to indicate communion (Acts 2:42; for further discussion see FELLOWSHIP).
The particular act of fellowship with Christ where Christians share together in a token or symbolic ‘meal’ of bread and wine is commonly called Holy Communion, or the Lord’s Supper (1 Corinthians 10:16-17). (For further discussion see LORD’S SUPPER.)