"Serious", "Tranquility"
It can be seen from the color tone of the first painting that it is mainly warm colors. In contrast with the second painting, it could have formed a kind of enthusiasm. However, the heavy colors in the background give people a serious feeling, so it is named "Serious".
The second painting is mainly cool colors, and green is the main tone, which is in harmony with the content of the painting, just like a quiet little village, so it is called "Tranquility".
I hope this explanation is to your liking, haha, the painting is good