A — 1: νίκη
►
(Strong's #3529 — Noun Feminine — nike — nee'-kay )

"victory," is used in 1—John 5:4 .

A — 2: νῖκος
►
(Strong's #3534 — Noun Neuter — nikos — nee'-kos )

a later form of No. 1, is used in Matthew 12:20; 1—Corinthians 15:54,55,57 .

B — 1: νικάω
►
(Strong's #3528 — Verb — nikao — nik-ah'-o )

"to conquer, overcome," is translated "(them) that come victorious (from)" in Revelation 15:2 , RV (AV, "that had gotten the victory"). See CONQUER , OVERCOME , PREVAIL.