"Either". I can tell by your reply above that you didn't read the article. It was obvious before but especially now. And just an aside, I read it. That's why I posted it so as to have it available to inform this thread.
Pasted below. Your definitions of Elder and Deacon do not come from scripture or the article. You should have read it, it can do nothing but good for your studies. Particularly, as concerns your reply and descriptions of elder and deacon respectively, I have put that in bold in the paste below.
Question: "Does the Bible teach the office of pastor?"
Answer: The word pastor comes from a Latin word which means “shepherd.” The New Testament presents two offices that constitute church leadership—elder/overseer and deacon. Paul lists the qualifications for elder/overseer in 1 Timothy 3:1–7 and Titus 1:5–9. Notice that in the 1 Timothy passage, Paul refers to them as
overseers (episcopos in the Greek), and in Titus he refers to them as
elders (presbuteros in Greek).
From this it can be concluded that there is one office with different designations. The word elder refers to the life experience of the office holder, while the word overseer emphasizes the responsibility of the office holder to watch over the congregation and meet their spiritual needs.
The second office is that of deacon, which is described in
Acts 6:1–6. Paul outlines the qualifications of deacons in
1 Timothy 3:8–13.
The deacon’s responsibility is to minister to the physical needs of the congregation, freeing up the elders to concentrate on their spiritual needs. In Acts 20:28, Paul said to the Ephesian elders, "Keep watch over yourselves and all the flock of which the Holy Spirit has made you overseers. Be shepherds of the church of God, which he bought with his own blood." Notice that Paul is telling the elders (office) to be shepherds (function or role) over the church.
In
Ephesians 4:11,
Paul identifies shepherding “pastors” as one function in the Church along with teaching, missionary work, evangelism, and prophecy. That this role is important is seen by the emphasis that Jesus puts on it in
John 21:15–17 where Jesus charges Peter to feed and tend His sheep. How is a pastor/shepherd supposed to feed and tend the flock of God? He does this by being able to teach the flock the word of God (
1 Timothy 3:2;
Titus 1:9) to bring the flock into maturity, and to be resistant to heresy. He is on guard for false teachers and warns those who stray that there are consequences to their belief and behavior.
In the New Testament, the words pastor, elder, and overseer can be used interchangeably, with each word providing a different emphasis on what contribution the leaders make to the Body of Christ. The three words come together in
1 Peter 5:1–2 where Peter exhorts elders to shepherd the flock of God and serve as overseers, caring for the flock as they wait for the Chief Shepherd.
The Book of 1st Peter chapter 5
Shepherd the Flock of God
5 So I exhort the elders among you, as a fellow elder and a witness of the sufferings of Christ, as well as a partaker in the glory that is going to be revealed: 2 shepherd the flock of God that is among you, exercising oversight, not under compulsion, but willingly, as God would have you; not for shameful gain, but eagerly;