For me, they do mean the same thing but I would use 'zone out' to describe when I personally decide to day dream. For example 'The class was really boring so I decided to zone out'. :-)

Both are correct and can be used in the same situation but we are more likely to say for the first one 'That's an orange car' :-)

“It has been three weeks and you still haven’t received the Christmas card and postcard. They seem to have gone missing on the way. Because of that, I've decided to write a Chinese New Year card for you. My wishes become happy Chinese New Year from merry Christmas. Although it’s an unfamiliar and exotic holiday to you, it’s nice to be able to enjoy this one too!.” Does it sound natural?

The best place to visit in my country is the sea, because it’s such a comfortable place ,and it has good weather especially at summer.

2021/11/06 1 I went to a new café near my place to relax in the afternoon. I was happy to find a new home to focus on reading books, and also the kitchenware, such as iron pots, were displayed beautifully. Unfortunately, one group of the customers was talking loudly; of course, I didn’t talk to them, but I thought I should pay attention more considering other people when I saw them talking like that. We can learn a lot from others’ behaviour, and that is today’s lesson.

The first sentence is very informal and you can only really use it with friends. The second one is good for all situations. I hope that helps. :-)