Hi Mohamad, Most people will use politeness. Civility is more formal. Civility has an underlying understanding of following some procedures/process, whereas politeness is more an expectation. Note this is not quite the same when we look at the words civil and polite. Civil is used frequently to describe someone in a more formal situation, whereas polite is more all situations/information situations. For example: He was very civil today during our meeting. She's very polite each time she goes to the coffee shop.

Yes, you can use them both and they are very similar. Politeness refers more to traditional personal manners, for example: holding a door open for someone, respecting elders, saying “please” and “thank you”, etc. Civility refers to “civil” behavior, for example: listening to others, showing tolerance, not fighting, etc.

Civility seems the same to me as politeness. I've never heard anyone use this word before in my entire life, nor have I used this word. This seems like a very formal way of saying "polite". I would use "politeness" because some people might not even know what "civility" is. I think if I came across this word, I could understand its meaning, but I would never use it myself, even in formal situations.