κοινωνός, -ή, -όν (< κοινός), [in LXX: Refs Pro.28:24, Isa.1:23 (חָבֵר), Mal.2:14 (חֲבֶרֶת), Est.8:13, al. ;] __1. as adj., = κοινός. __2. As subst., ὁ, ἡ κ., __(a) a partner, associate, companion: Refs 2Co.8:23, Phm 17; with dative of person(s), Luk.5:10; with genitive of person(s), Heb.10:33; id. before ἐν, Mat.23:30; __(b) a partaker, sharer: with genitive of thing(s), Refs 1Co.10:18 10:20, 2Co.1:7, 1Pe.5:1, 2Pe.1:4 (see Deiss., BS, 368 n2).† (AS)
Thayer:
1) a partner, associate, comrade, companion 2) a partner, sharer, in anything 2a) of the altar in Jerusalem on which the sacrifices are offered 2a1) sharing in the worship of the Jews 2b) partakers of (or with) demons 2b1) brought into fellowship with them, because they are the authors of heathen worship
κοινωνός
koinōnos
koy-no-nos'
From G2839; a sharer, that is, associate
KJV Usage: companion, X fellowship, partaker, partner.
G2841 κοινωνέωκοινωνέω
koinōneō
koy-no-neh'-o
From G2844; to share with others (objectively or subjectively)
KJV Usage: communicate, distribute, be partaker.
G2842 κοινωνίακοινωνία
koinōnia
koy-nohn-ee'-ah
From G2844; partnership, that is, (literally) participation, or (social) intercourse, or (pecuniary) benefaction