The word 街道 is formed by combining two characters, 街 and 道, which both fundamentally mean a road, path, or way. This is a conceptual combination where two synonymous or closely related ideas are joined to create a single, more comprehensive and vivid composite concept. It merges the notion of a 街 (a main urban thoroughfare, often lined with shops) with 道 (a general pathway for travel) to collectively evoke the complete, concrete idea of a "street", encompassing not just the physical roadway but also the built-up, public space characteristic of a town or city block.