The Chinese word **账号 (zhànghào)**, meaning "account" (as in a username or login), is a modern compound noun formed by combining two meaningful characters: **账 (zhàng)**, which originally refers to a ledger or financial record, and **号 (hào)**, which means number, designation, or identifier. Together, they create a logical semantic unit where **账** provides the categorical context of a record or entry, and **号** specifies that it is a specific, labeled instance. This formation follows the common Chinese morphological process of compounding, where two independent morphemes are joined to produce a new, more specific term that accurately describes a concept in the digital and administrative realms.