The Chinese word 陆地 (lùdì) is a compound noun formed by combining two characters with related meanings to create a more specific term. The first character, 陆 (lù), means "land" or "continent", referring to dry ground as opposed to water. The second character, 地 (dì), means "earth", "ground", or "land" in a broad sense. When paired together in this order, they create a coordinative compound where both elements reinforce and specify the same core concept, resulting in the precise meaning of "dry land" or "terra firma", the solid, continuous surface of the Earth as distinct from seas, lakes, or rivers. This pattern of combining synonyms or near-synonyms is common in Chinese for forming formal or technical vocabulary.