わかりやすくてよかった。
けど結局そういうオチなんかい、とも思った。

> in many cases, these different terms are used interchangeably in different countries

Difference between Harbour, Port, Terminal, Berth, Quay, Pier, Jetty
https://www.shippingandfreightresource.com/harbour-port-terminal-berth-quay-pier-jetty/