(ad-)minister (unto), serve, use the office of a deacon

“Deacon” From Boyd’s Bible Dictionary:

(servant). A servant of the Church (Acts 6:1-6). Qualifications in 1 Timothy 3:8-12.

“Minister” From Boyd’s Bible Dictionary:

(assistant). Attendant (Ex. 24:13; Josh. 1:1; 1 Kings 19:21; Ezra 8:17). Magistrate (Rom. 13:6). Preacher and teacher (1 Cor. 4:1; 2 Cor. 3:6). Celestial high priest (Heb. 8:1-3).

“Deacon (διάκονος)” From Concise Bible Dictionary:

This name is generally applied to the seven who were chosen to superintend the distribution of the funds of the church in Acts 6:3; but they are not there called deacons, and though the name may be applicable to them, yet it cannot be restricted to such service. The term applies to any service not otherwise specified. The Greek word is more often translated “minister” and “servant” than “deacon.” It twice refers to Christ (Rom. 15:8; Gal. 2:17); also to Paul and others (Col. 1:7,23,25); to magistrates (Rom. 13:4); and even to Satan’s emissaries (2 Cor. 11:15). The Epistle to the Philippians was addressed to the saints and to the “bishops and deacons,” or overseers and servants. In 1 Timothy 3:8-13 the moral qualifications of the deacon or minister are given, but what his work was is not specified; it is evident that they carried out their service officially. The service of deacon must not be confounded with “gift.” Phebe was DEACONESS of the assembly in Cenchrea (Rom. 16:1).

“Minister” From Concise Bible Dictionary:

The word commonly occurring in the Old Testament is sharath, “to minister, serve.” Joshua was Moses’ minister. All God’s hosts are called “ministers of his, that do his pleasure,” and He maketh “his ministers a flaming fire.” The priests were the ministers of Jehovah (Josh. 1:1; Psa. 103:21; Psa. 104:4; Joel 2:17). In the New Testament three words are used.
1. διάκονος. See DEACON.
2. λειτουργός, “a public servant,” one holding an official position. It is applied to the Lord; to angels; to Paul; and to magistrates (Rom. 13:6; Rom. 15:16; Heb. 1:7; Heb. 8:2).
3. ὑπηρέτης, literally “under-rower,” and so an “attendant” on, or “assistant” to a superior authority (Luke 1:2; Luke 4:20; Acts 13:5; Acts 26:16; 1 Cor. 4:1). It is also translated “officer” and “servant.”

Strong’s Dictionary of Greek Words:

Greek:
διακονέω
Transliteration:
diakoneo
Phonic:
dee-ak-on-eh’-o
Meaning:
from 1249; to be an attendant, i.e. wait upon (menially or as a host, friend, or (figuratively) teacher); technically, to act as a Christian deacon
KJV Usage:
(ad-)minister (unto), serve, use the office of a deacon