This is the 585th most frequent Chinese word.
主题
"Theme" or "subject."
Here, '主题' is used to mean 'theme' or 'main idea' that a narrative revolves around.
这个电影的主题是家庭和团聚。
The theme of this movie is family and reunion.
In this example, '主题' signifies the stylistic or conceptual foundation underlying the design.
这个网站的设计主题是简洁和现代化。
The design theme of this website is simplicity and modernization.
In this sentence, '主题' refers to the subject or main topic of a discussion or meeting.