A ship is the generic term for most comparatively large deepwater vessels.
A ship, or “full-rigged ship” (“full-rigger“), is also classified as a sailing vessel of three or more masts, all of which are fully square rigged. As well, a gaff-rigged spanker would normally be set on the mizzen (aft) mast, and any number of fore and aft sails (usually staysails) could fill the spaces between the masts and foremast and bowsprit. (The larger clipper ships of the second half of the 19th century could set over an acre of canvas!)
All post-17th century naval ships from the frigate upward were full-rigged ships.