This is the
definition of the noun ferry (as I write)
- A ship used to transport people, smaller vehicles and goods from one port to another, usually on a regular schedule.
- A place where passengers are transported across water in such a ship.
- The legal right or franchise that entitles a corporate body or an individual to operate such a service.
I make a slightly wider cut, including aircraft and other devices that operate in a similar way.
From the same source its etymology is
From Middle English ferien ("to carry, convey, convey in a boat"), from Old English ferian ("to carry, convey, bear, bring, lead, conduct, betake oneself to, be versed in, depart, go"), from Proto-Germanic *farjaną ("to make or let go, transfer, ferry"), from Proto-Indo-European *per- ("to bring or carry over, transfer, pass through"). Cognate with German dialectal feren, fähren ("to row, sail"), Danish færge ("to ferry"), Swedish färja ("to ferry"), Icelandic ferja ("to ferry"). Related to fare.
Traversier is the most commonly used word for the ferry boat and the ferry service. Bac is also often used, as this refers to a small, rectangular flat bottomed boat such is often used as ferry in calm waters. Traverse is the ferry crossing.