Acts 2:42κοινωνίᾳ
They devoted themselves to the apostles’ teaching and to the fellowship, to the breaking of bread and to prayer.
Romans 15:26κοινωνίαν
For Macedonia and Achaia were pleased to make a contribution for the poor among the saints in Jerusalem.
1 Corinthians 1:9κοινωνίαν
God, who has called you into fellowship with His Son Jesus Christ our Lord, is faithful.
2 Corinthians 6:14κοινωνία
Do not be unequally yoked with unbelievers. For what partnership can righteousness have with wickedness? Or what fellowship does light have with darkness?
Philippians 2:1κοινωνία
Therefore if you have any encouragement in Christ, if any comfort from His love, if any fellowship with the Spirit, if any affection and compassion,
1 John 1:3κοινωνίαν
We proclaim to you what we have seen and heard, so that you also may have fellowship with us. And this fellowship of ours is with the Father and with His Son, Jesus Christ.

Abbott-Smith

κοινωνία, -ας, ἡ
(κοινωνός), [in LXX: Lev.6:2 (יָד תְּשׂוּמֶת), Wis.8:18, 3Ma.4:6 * ;]

1. fellowship, communion: Act.2:42, 2Co.6:14, Php.1:5; τ. υἱοῦ, 1Co.1:9; τ. αἵματος, σώματος Χρ., 1Co.10:10 : παθημάτων αὐτσῦ, Php.3:10; τ. πνεύματος, 2Co.13:13, Php.2:1; δεξιὰς κοινωνίας, Gal.2:9; τ. πίστεώς σου, Phm 6; before μετὰ: τ. πατρός, 1Jn.1:3 Jn 1:6; ἡμῶν, ἀλλήλων, 1Jn.1:3 Jn 1:7.

2. contribution (as outcome of fellowship): Rom.15:26, 2Co.8:4 9:13, Heb.13:6 (cf. Art. Communion, DB, i, 460 ff.; MM, Exp., xv).†
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.