The compound word **开阔 (kāikuò)** is formed through the combination of two synonymous semantic components, creating an intensified and nuanced meaning. The first character, **开 (kāi)**, primarily means "to open" or "to expand," while the second, **阔 (kuò)**, means "wide" or "broad." When joined, their meanings converge and amplify each other, moving from the literal sense of "open and wide" (as in a physical landscape) to a powerful metaphorical concept describing something that is **spacious, vast, or unrestricted**. This makes it applicable to both tangible spaces (like an open field) and abstract qualities (like a broad mind or expansive horizons), embodying a sense of liberation and absence of limits.