This is the 4950th most frequent Chinese word.
边缘
"Edge," "margin," or "periphery."
In this sentence, '边缘' literally means the edge of a physical object or space.
他站在悬崖的边缘。
He stands on the edge of the cliff.
Here, '边缘' metaphorically indicates being at the periphery or outside the main core of a social group.
她感觉自己处于社会的边缘。
She feels herself at the margins of society.
In this usage, '边缘' extends its meaning to the metaphorical edge or limit of a conceptual idea or state.