captain (that had rule), chief (captain), general, governor, keeper, lord, ((-task- ))master, prince(-ipal), ruler, steward

Boyd’s Bible Dictionary:

(head). Title for a leader of a band of ten, fifty, hundred or thousand (Deut. 1:15; Josh. 10:24; Judg. 11:6,11). Also a civic meaning (Isa. 1:10; 3:3). “Captain of the Guard” (Acts 28:16), was commander of the Praetorian troop of Rome. “Captain of the Temple” (Acts 4:1), was chief of the Temple watchmen.

“Captain” From Concise Bible Dictionary:

In the Old Testament this word is used for one filling any office of rule or command: as the head of a tribe (Num. 2:3-29); commander of an army, and so forth. The person who appeared to Joshua as “a man” declared himself to be “captain of the Lord’s host.” He told Joshua to remove his shoes from his feet, for the ground was holy, evincing that he was God’s representative to lead their warfare (Josh. 5:14-15). In the New Testament the Lord is called “Captain” of our salvation, ἀρχηγός, “chief leader” (Heb. 2:10).
There was also a “CAPTAIN OF THE TEMPLE,” στρατηγός (Luke 22:4, 52; Acts 4:1; Acts 5:24, 26). This word is literally “the leader of an army”; it is also applied to magistrates (Acts 16:20), but the captain of the temple was set not over the soldiers, but over the priests and Levites: (Compare Num. 32; 1 Chron. 9:11; Jer. 20:1).
THE CHIEF CAPTAIN or HIGH CAPTAIN is χιλίαρχος, lit. “Captain of a thousand,” applied to the chief of the soldiers in Jerusalem (Acts 21-25).
CAPTAIN OF THE GUARD (Acts 28:16), is στρατοπεδάρχης, properly “commander of a camp,” but here the prefect of the Prætorian Guard, an officer to whom state prisoners were entrusted at Rome.

“Governor” From Concise Bible Dictionary:

There are ten Hebrew words thus translated, signifying any ruler, captain, viceroy, etc., that was set over the people. The term is also so used in the New Testament except the following:
1. ἐθνάρχης, “governor of a nation,” an ethnarch, as the ruler of Damascus was called (2 Cor. 11:32).
2. ἐύθύνων, “one who directs, guides,” used of the “steersman of a ship” (James 3:4).
3. ἡγεμών, the procurator of Judaea (Matt. 27:2; Luke 20:20, &c).
4. οἱκονόμος, “manager of a house, steward” (Gal. 4:2).

“Master” From Concise Bible Dictionary:

In the Old Testament there are five words so translated, but only one that occurs frequently, adon, which is often rendered “Lord,” and signifies “master” either as owner or ruler. In the New Testament there is 1. κύριος, often translated “Lord”; this is rendered “master” in reference to God in Ephesians 6:9 and Colossians 4:1; and is often used as between master and servants.
2. διδάσκαλος, “teacher.” This is often translated “master” in the gospels in application to the Lord (Matt. 8:19; Mark 4:38; Luke 3:12; John 1:38, and more). It is the same word in James 3:1, “Be not many teachers.”
3. δεσπότης, master in the sense of “owner,” as of slaves (1 Tim. 6:1-2; 2 Tim. 2:21; Titus 2:9; 1 Peter 2:18).
4. ἐπιστάτης, “superintendent, overseer” (Luke 5:5; Luke 8:24,45; Luke 9:33,49; Luke 17:13).
5. καθηγητής “leader” (Matt. 23:8,10).
6. ραββί, “Rabbi,” a Jewish title (Matt. 26:25,49; Mark 9:5; Mark 11:21; Mark 14:45; John 4:31; John 9:2; John 11:8).
7. κυβερνήτης, “ship-master” (Acts 27:11; Rev. 18:17).

Strong’s Dictionary of Hebrew Words:

Transliteration:
sar
Phonic:
sar
Meaning:
from 8323; a head person (of any rank or class)
KJV Usage:
captain (that had rule), chief (captain), general, governor, keeper, lord, ((-task- ))master, prince(-ipal), ruler, steward