Here is every usage of koinonia 2842, the word used for communion.
Act 2:42 NASB - They were continually devoting themselves to the apostles’ teaching and to fellowship[2842], to the breaking of bread and to prayer.
Rom 15:26 NASB - For Macedonia and Achaia have been pleased to make a contribution[2842] for the poor among the saints in Jerusalem.
1Cr 1:9 NASB - God is faithful, through whom you were called into fellowship[2842] with His Son, Jesus Christ our Lord.
1Cr 10:16 NASB - Is not the cup of blessing which we bless a sharing[2842] in the blood of Christ? Is not the bread which we break a sharing[2842] in the body of Christ?
2Cr 6:14 NASB - Do not be bound together with unbelievers; for what partnership have righteousness and lawlessness, or what fellowship[2842] has light with darkness?
2Cr 8:4 NASB - begging us with much urging for the favor of participation[2842] in the support of the saints,
2Cr 9:13 NASB - Because of the proof given by this ministry, they will glorify God for your obedience to your confession of the gospel of Christ and for the liberality of your contribution[2842] to them and to all,
2Cr 13:14 NASB - The grace of the Lord Jesus Christ, and the love of God, and the fellowship[2842] of the Holy Spirit, be with you all.
Gal 2:9 NASB - and recognizing the grace that had been given to me, James and Cephas and John, who were reputed to be pillars, gave to me and Barnabas the right hand of fellowship[2842], so that we might go to the Gentiles and they to the circumcised.
Phl 1:5 NASB - in view of your participation[2842] in the gospel from the first day until now.
Phl 2:1 NASB - Therefore if there is any encouragement in Christ, if there is any consolation of love, if there is any fellowship[2842] of the Spirit, if any affection and compassion,
Phl 3:10 NASB - that I may know Him and the power of His resurrection and the fellowship[2842] of His sufferings, being conformed to His death;
Phm 1:6 NASB - and I pray that the fellowship[2842] of your faith may become effective through the knowledge of every good thing which is in you [G1473]] for Christ’s sake.
Hbr 13:16 NASB - And do not neglect doing good and sharing[2842], for with such sacrifices God is pleased.
1Jo 1:3 NASB - what we have seen and heard we proclaim to you also, so that you too may have fellowship[2842] with us; and indeed our fellowship[2842] is with the Father, and with His Son Jesus Christ.
1Jo 1:6 NASB - If we say that we have fellowship[2842] with Him and yet walk in the darkness, we lie and do not practice the truth;
1Jo 1:7 NASB - but if we walk in the Light as He Himself is in the Light, we have fellowship[2842] with one another, and the blood of Jesus His Son cleanses us from all sin.
communion=fellowship
the Lords supper is a meal where fellowship is shared