Old squaw and Sea duck

Old squaw noun - A common long-tailed sea duck of the northern parts of the United States.

Sea duck and old squaw are semantically related. In some cases you can use "Sea duck" instead a noun phrase "Old squaw".

Sea duck noun - Any of various large diving ducks found along the seacoast: eider; scoter; merganser.

Old squaw and sea duck are semantically related. Sometimes you can replace phrase "Old squaw" with "Sea duck", this phrases are similar.