The word **补助** is a compound term formed by combining two distinct but semantically related characters: **补** (bǔ), meaning "to supplement, make up for, or repair," and **助** (zhù), meaning "to help, aid, or assist." In this coordinative (or synonymous) compound structure, both morphemes contribute their meanings to create a new, unified concept that is more specific than either alone. Together, they denote a form of **financial or material aid provided to make up for a shortfall or need**, such as a subsidy, allowance, or grant. This formation follows a common pattern in Chinese where two verbs or concepts with overlapping meanings are joined to express an abstract nominal idea related to supportive provision.