Acquaintance: somebody known or met before.

I'm contacting several of my acquaintances to see if they know of any job opportunities.

I don't know him well, but he is an acquaintance of mine from a long time ago.

Appearance: how something looks, what something looks like.

He could improve his appearance by buying some new clothes.

He doesn't care about his appearance, so he doesn't make a good impression.

(Customers really care about the appearance of the products that they buy.)

Consequence: an outcome or a result.结果

Many forms of life will become extinct as a consequence of global warming.

One consequence of his drinking has been the poor quality of his work.质量

(I'm not sure he understand the consequence of his arrogant attitude.)

Factor: something that affects or influences the end result.

One factor that needs to be considered is his arrogant personality.

Her health is one factor we can't afford to ignore.

(Their poor management team was one factor that led to the company's failure.)

Exception: to be unique or treated differently.例外

Everyone has to be in the office before 9 o'clock with the exception of the sales department.

I'm sorry but I can't make an exception and allow you to bring your dog to the office.

(Without exception, I expect everyone to work trough the weekend!)杀千刀的

（An important factor in their decision not to invest was the lack of good leadership.）

(He says he is an acquaintance of yours, so I'd like you to tell me if you know him.)