flagpole
Word family
Synonym discussion
Sense: noun/1
All three words name an upright pole that holds a flag, but they differ in register and typical setting. 'Flagpole' is the everyday word used in schools, parks, government buildings, and homes; learners should default to it. 'Flagstaff' is more formal and ceremonial, common in military bases, embassies, and historical writing — it can also refer to the short pole on which a flag is mounted to be carried in a parade. 'Mast' usually refers to the tall vertical pole on a ship that supports sails, but it also names the pole on a ship from which the flag is flown ('the flag was raised on the mast'), and the technical phrase 'half-mast' (or 'half mast') still uses this word even for land-based flagpoles. So: school yard → flagpole; military parade → flagstaff; ship → mast.
Etymology
A straightforward compound of 'flag' + 'pole', first attested in English in the 1880s as the practice of flying national flags from tall public poles spread in the United States and Britain. 'Flag' itself comes from late Middle English, possibly from a Scandinavian source meaning a piece of cloth that flaps in the wind. 'Pole' comes from Old English 'pal', borrowed from Latin 'palus' meaning a stake driven into the ground.