is a specific kind of: body of water, water.

is a broader term that covers: bight | Guantanamo Bay.

instances of which are: Abukir, Abukir Bay | Andaman Sea | Bay of Bengal | Bay of Biscay | Bay of Fundy | Bay of Naples | Biscayne Bay | Bo Hai, Po Hai | Buzzards Bay | Cape Cod Bay | Chesapeake Bay | Delaware Bay | Galveston Bay | Galway Bay | Hangzhou Bay | James Bay | Korea Bay | Massachusetts Bay | Minamata Bay | Mobile Bay | Monterey Bay | Moreton Bay | Narragansett Bay | New York Bay | Osaka Bay | Penobscot Bay | Prudhoe Bay | San Diego Bay | San Francisco Bay | Sea of Azof, Sea of Azoff, Sea of Azov | Tampa Bay ... show more.

is a part of: sea.