endless variety of forms; multifariousness
A yojijukugo (four-character compound) used to describe an immense diversity of shapes, appearances, or states. Often found in literary or formal descriptions.
In the natural world, there exists an endless variety of living things.
His works are multifarious, never boring the viewer.
千差万別 emphasizes diversity in kind or quality, while 千態万状 focuses on variety in forms or appearances.
多種多様 is a more common, everyday term for 'diverse' or 'varied', whereas 千態万状 is a literary yojijukugo.
A yojijukugo composed of 千 (thousand), 態 (appearance/state), 万 (ten thousand), and 状 (form/condition), literally meaning 'a thousand states and ten thousand forms'. The exact historical origin is uncertain, but it follows a common pattern of using large numbers to express abundance.