What's the difference between captain and trierarch?

Captain

Definition:

(n.) A head, or chief officer
(n.) The military officer who commands a company, troop, or battery, or who has the rank entitling him to do so though he may be employed on other service.
(n.) An officer in the United States navy, next above a commander and below a commodore, and ranking with a colonel in the army.
(n.) By courtesy, an officer actually commanding a vessel, although not having the rank of captain.
(n.) The master or commanding officer of a merchant vessel.
(n.) One in charge of a portion of a ship's company; as, a captain of a top, captain of a gun, etc.
(n.) The foreman of a body of workmen.
(n.) A person having authority over others acting in concert; as, the captain of a boat's crew; the captain of a football team.
(n.) A military leader; a warrior.
(v. t.) To act as captain of; to lead.
(a.) Chief; superior.

Example Sentences:

(1) He was the first to win as a captain and a manager.
(2) Coup leader Captain Amadou Sanogo on Friday pleaded for foreign help to preserve the territorial integrity of the former French colony, a major gold and cotton producer.
(3) Henderson was given permission to join Fulham when Brendan Rodgers arrived at Anfield in 2012 but has since developed into an important asset for the Liverpool manager, to the extent that the 24-year-old is the leading candidate to succeed Steven Gerrard as club captain when the 34-year-old leaves for LA Galaxy.
(4) Among the dead were two young young officers, Major Mujahid Ali and Captain Usman, whose life stories the media seized upon, helped by the military's public relations machine.
(5) He sends a low ball into the middle, in the general direction of Fabregas, but the former Arsenal captain can't get ahead of Lahm, who is making a proper nuisance of himself.
(6) This is no doubt a captain’s pick by Malcolm Turnbull and we hope for the sake of the relationship that it has been a good pick.” The planned appointment of Hockey to the Washington role has been one of the worst-kept secrets in Australian politics .
(7) Nemanja Vidic will leave Manchester United at the end of the season, the captain stating he wants to challenge himself again.
(8) There was effectively a state of open warfare between Mourinho and the club captain Iker Casillas.
(9) The club captain, whose return had been delayed due to his participation at Euro 2012 with Holland, underwent his medical assessment and he and the manager sought to put a professional front on what has been a deep fissure in their relationship.
(10) Manager Claudio Ranieri, captain Wes Morgan and goalkeeper Kasper Schmeichel were spotted at the airport, where hordes of local media and fans waited for their arrival.
(11) He admitted the increased profile afforded him by appearances in movies such as Captain America , its forthcoming sequel The Winter Soldier and 2012's $1.5bn superhero ensemble piece The Avengers had helped him get a foot on the ladder as a film-maker.
(12) Patrick Vieira, captain and on-pitch embodiment of Wenger’s reign, won the trophy with the last kick of his career at the club in the season when the Arsenal-United axis was finally broken by Chelsea at the top of the Premier League.
(13) The home fans were lifted by the sight of Billy Bonds, a legend in these parts, being presented with a lifetime achievement award before the kick-off and the former West Ham captain and manager probably would have enjoyed playing in Allardyce's combative midfield.
(14) The other rowers in the Arctic crew were Billy Gammon, 37, from Cornwall; Rob Sleep, 38, and British army officer Captain David Mans, 28, both from Hampshire.
(15) Now 31, England captain and a respected veteran of the game, she's seen plausible, semi-professional wages become a part of women's football – finally – and can currently expect to earn about £25,000 a season.
(16) His marker, it emerged, had been the subject of an unwitting bodycheck by his captain.
(17) True, that comment was made early in Guardiola’s spell as Bayern manager and perhaps it was just a way of endearing himself to his new captain, but there is no doubt the former Barcelona manager adores Lahm.
(18) Scarborough council said leaving the houses standing could cause a domino-effect down the steep slope above the picturesque harbour where the explorer Captain James Cook lodged and learned his seafaring skills.
(19) Ronald Johnson, the Missouri highway patrol captain drafted by the governor to take over security in the town and calm the situation down, blamed “premeditated criminal acts”.
(20) There was no place for the captain Iker Casillas nor for Xavi, this generation’s ideologue.