The word 确实 is formed through the combination of two individual characters, each contributing a core meaning that merges to create a new, unified concept. The first character, 确 (què), carries the inherent idea of something being definite, firm, or verified. The second character, 实 (shí), contributes the essential notion of substance, truth, or reality. Their formation is not grammatical but conceptual; they are placed together in a coordinated, complementary relationship where 确 emphasizes the aspect of certainty and 实 anchors it in factual truth. Together, they forge a single idea stronger than either part alone, the affirmed state of being true and certain, through a classical Chinese word-building pattern where semantically similar characters reinforce each other.