我觉得吊水的吊应该是调,就是调动的意思就比较说得通。水就是香港粤语里常用可以代表很多不同东西的字,应该就有一些代表人的意思的词语。至于还钱和付钱,好像在经济学上并没有差别。美元纸币上就有一段话:This note is legal tender for all debts, public and private,说明所有应付的钱都可以被认为是债务,那么付钱就等于还钱了。
In UK and most commonwealth countries refer to adhesive medical bandage as plaster, because of the branding names (elastoplast, hansaplast) whereas in US, it’s refer to as band-aid because of branding names.