The word 紧密 (jǐnmì) is a Chinese compound formed through the combination of two individual characters, 紧 (jǐn) meaning "tight" or "tense" and 密 (mì) meaning "dense", "close", or "intimate". This formation follows a common pattern in Mandarin where two synonyms or near-synonyms are joined to create a single, more emphatic or nuanced concept. Together, they produce an adjective describing a state of being closely connected, inseparable, or having a very strong bond, either physically (like tightly packed objects) or metaphorically (like a close-knit relationship or coordinated cooperation). The structure is coordinative, where both elements contribute equally to the overall meaning of "close and tight", enhancing the sense of solidity and inseparability.