The word 异议 is formed by combining two independent characters, each carrying its own core meaning, to create a new, unified concept. The first character, 异 (yì), fundamentally means "different", "unusual", or "to diverge". The second character, 议 (yì), means "opinion", "discussion", or "to deliberate". When placed side-by-side, their meanings merge conceptually: a "different opinion" or a "divergent view". It is not merely the sum of its parts, but a fusion where 异 modifies 议, resulting in the complete idea of "objection", "dissent", or a formal expression of disagreement.