bible - greek - overseer

Acts 20:28 NASB -: "Be on guard for yourselves and for all the flock, among which the Holy Spirit has made you overseers, to shepherd the church of God which He purchased with His own blood.
Philippians 1:1 NASB -: Paul and Timothy, bond-servants of Christ Jesus, To all the saints in Christ Jesus who are in Philippi, including the overseers and deacons:
1 Timothy 3:2 NASB -: An overseer, then, must be above reproach, the husband of one wife, temperate, prudent, respectable, hospitable, able to teach,
Titus 1:7 NASB -: For the overseer must be above reproach as God's steward, not self-willed, not quick-tempered, not addicted to wine, not pugnacious, not fond of sordid gain,
1 Peter 2:25 NASB -: For you were continually straying like sheep, but now you have returned to the Shepherd and Guardian of your souls.