One way to hold this word: a long narrow open container that carries people or goods along one set path. The Venice boat is that shape in water - thin enough for a tight canal, open at the top, both ends lifted. Lift the same shape into the air on ropes or a cable and you get the balloon basket and the mountain cabin; set it on rails or on a shop floor and you get the open wagon and the free-standing shelf unit.
From the word’s history
Borrowed from Italian gondola, from the Venetan form gondola; the source also suggests a possible but uncertain link to Byzantine Greek kontoura, a kind of small ship.
從義大利文 gondola 借來，更早是威尼斯方言的 góndoƚa。資料另外提到一條「可能」的線：拜占庭希臘文 κοντοῦρα（一種小船），但這條線本身就標著不確定。
Wiktionary etymology in the supplied packet (source_ref kaikki:3f6f69a190036ae4:723422689)
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