Fort they're kinda the same thing, but a fort tends to be a building whereas a fortress can be many buildings or a city. Fortboth castle and fort are medieval fortified buildings. Fort has to be used in front of a name of a place.
福特海斯州立大学(fort hays state university,简称fhsu)建于1902年,坐落于美国堪萨斯州西北部的海斯(hays)市,是一所由堪萨斯州政府税收资助的公立大学。 福特海斯大学由文理学院,教育与技术学院,商业与企业管理学院,健康与生命科学学院。 It's usually a fortified town on an elevated position. It's sometimes temporary, doesn't necessarily have strong fortifications and can often be outside cities.
We must take over this fortress before the suset. Fort worth is a very important place for our defense line. Fort 1.堡垒:一个设防的地方或驻扎有军队的地方 2.要塞:一永久军事驻地 fortress can be used alone. It's never temporary, it always has strong fortifications and can rarely be outside cities.
The key difference is that a castle is designed for the nobility class comprising of dynastic rulers and kings while a fort is built for military objectives. They both are in a sense strong for military purposes.的同义词