What's the difference between boatman and gondolier?

Boatman

Definition:

Example Sentences:

(1) Recalling how they competed together in regattas together when they first met, Bertelli has said of his wife: "She was the boatman."
(2) 6 Empty Room (C-Note, 2003) To date, Prince has yet to write a breakup album like Blood on the Tracks or Nick Cave and the Bad Seeds’s The Boatman’s Call.
(3) The Hindus had known how to care for the waterways, the boatman admitted, and after they had left, the government had not been equal to the task.
(4) On reaching the Dee, visitors ring a ship's bell to alert a boatman and take what may well be the briefest ferry journey to any tiny island in Britain.
(5) We jumped into a boat and asked the boatman to take us closer to Qasr el-Nil bridge, which would bring us near Tahrir.
(6) As I floated through the waterways of the Old City, the boatman described how lovely it had been, in the days before what Kashmiris always call "the Troubles".
(7) They were criminals," said Maha Madu, a Timbuktu boatman, now in the Niger river town of Mopti.
(8) (1) An interesting style of acting was demonstrated on a stage of a Kyogen, a classic comedy of Japan, titled "Funawatashimuko", i.e., "A boatman and a bridgegroom in a boat".
(9) Antagonistic postures which move toward the opposite direction were displayed by a boatman who is pulling an oar and a passenger who is being moved by the rolling of a boat.

Definition:

Example Sentences:

(1) He would bring back a gondolier's rowlock from Venice; he would haul hollowed logs or curious roots out of the river to lie on the lawn; he would explain the workings of the Japanese deer-scarer or he would arrange single branches of leaves or flowers, Japanese style, the better to admire the colour of the stems, the shape of the leaves, the streaks in the bark.
(2) The President of the United States, a gondolier in Venice, just fill in the names.
(3) Budget night at the opera: 28 March 1980 The souvenir programme (with it being a gala night, the programme cost more than a seat in some other theatres) promised "knights, esquires, ladies, ruffians, pages, maskers, soldiers, ushers, halberdiers, cupbearers and gondoliers."