The word "涓涓" is formed by reduplicating the character 涓, which is a pictophonetic character composed of the water radical 氵 on the left, denoting its meaning related to water, and the component 肙 on the right, which primarily provides phonetic guidance. This repetition results in a term that emphasizes a continuous, trickling flow of water, focusing on the literal formation through character duplication and component analysis without invoking abstract patterns.