art form
noun
1- a conventionally established form of artistic composition, such as the novel, sonata, or sonnet艺术形式（如小说、奏鸣曲或十四行诗等）。
1.1
- any activity regarded as a medium of imaginative or creative self-expression具有想像力（或创造性）的行动：
he elevates stage managing to an art form.
他把舞台管理上升为一种艺术。