ship

a ship that carries people: passenger ship, cruise ship, liner, ferry, ro-ro
a ship that carries goods: cargo ship, merchant ship, freighter, oil tanker, super tanker, barge
a small ship: boat, motorboat, powerboat
a ship with sails: yacht, dinghy, sailing ship, sailing boat British English/sailboat American English, catamaran
a fighting ship: warship, aircraft carrier, battleship, cruiser, frigate, destroyer, minesweeper, gunboat, man-of-war old-fashioned
a ship that people live on: houseboat, narrow boat British English
a ship that goes under water: submarine
people on a ship: sailor, captain, passenger, seaman, the crew
parts of a ship: deck, cabin, porthole, engine room, mast, rudder, hullship