• Dr. Bob
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      3 days ago

      Only in America. And only in the 20th century. A mast is a vertical pole or structure. A staff is a handheld pole. We still have radio masts and masts on top of cranes. Flags fly from masts on land all the time. A ship’s mast is called a mast because it’s a big vertical pole. Somebody in U.S. got confused by this and insisted that flags fly on staffs (staves) on land.

      eta: In American English, a flag flown halfway up its flagpole as a symbol of mourning is at half-staff, and a flag flown halfway up a ship’s mast to signal mourning or distress is at half-mast. The distinction does not run deep, though, as the terms are often mixed up, especially in unofficial contexts.

      Outside North America, half-staff is not a widely used term, and half-mast is used in reference to half-raised flags both on land and at sea. Half-mast is also preferred in Canada for both uses, though half-staff appears more frequently there than it does outside North America.

      Source: https://grammarist.com/usage/half-mast-half-staff/

      Emphasis added