总的说来，quay, pier, jetty 都表示具体的码头，真正有那么一个河岸，桥墩，突出物可以让船靠泊的地方；berth，dock, terminal 与前三项相比就比较抽象，berth指的是能容船靠泊的空间; dock指两码头之间可停船的空间，但更多指船坞；terminal, 则表示终点站，终到港.具体意义及用法如下：quay

n. 码头,突堤,岸壁

a wharf or reinforced bank where ships are loaded or unloaded.

码头或经过加固的河岸，在此可往船上装货或卸货

the quay looked like a long stone road going into the sea.

这个码头看起来像一条通入海里的长长的石头路。berth

一同从内条求南权信书便，京住严。

sufficient space for a ship to maneuver; sea room:

能实天第者门打速万影周备状。

操船空间，安全距离为船只回旋留出的足够空间；海洋空间：

kept a clear berth of the reefs.

与礁石保持安全距离dock

船坞, 修船所; [常用复](附设在码头 、仓库等的)造船厂, [美口]码头; 停泊处

the area of water between two piers or alongside a pier that receives a ship for loading, unloading, or repairs.

船坞两个码头之间的或沿码头的水域用来容船装卸或修理等terminal

n

（火车、公共汽车等的）终点站，总站

航空集散站

shipping terminal

航运基地; 码头仓库pier

n.(桥)墩；码头

a platform extending from a shore over water and supported by piles or pillars, used to secure, protect, and provide access to ships or boats.

桥墩，墩从河岸延伸至水面以上的平台，由桩或柱子支撑，用来给船或艇保证安全、保护和提供通道

floating pier

浮码头

freight station pier

货运站码头jetty

a structure, such as a pier, that projects into a body of water to influence the current or tide or to protect a harbor or shoreline from storms or erosion.

防波堤一种突入水体用来影响水流或潮水或使港口、海岸免受暴雨和侵蚀的建筑结构（如突堤）

entrance jetty

进港导堤

floating jetty

浮码头

oil jetty

石油码头

repair jetty

修船码头

tanker jetty

油船码头