The word 兰花 (lánhuā), meaning "orchid", is a compound noun formed through semantic combination: the first character 兰 (lán) specifically denotes the orchid plant or its elegant quality, while the second character 花 (huā) is the general term for "flower". Together, they create a precise botanical term where 兰 acts as a modifier specifying the type of 花, following a common Chinese word-formation pattern of "attribute + head noun" to designate a sub-category (like 梅花 for plum blossom). This construction distinguishes the orchid flower from other flowers and reflects the language's tendency to form specific terms through descriptive compounding.