A wide, multi‑lane thoroughfare, typically lined with trees or landscaping, often serving as a major urban artery.
A public way in a built‑up area, usually paved, serving residential, commercial, or mixed uses. Can be narrow or wide.
A general term for a paved or improved route connecting two or more places. Applies to rural highways, urban arterials, and everything in between.
A broad, often tree‑lined street, typically in a city grid, sometimes indicating a grander or more ceremonial character than a “street.”
While usage varies by region, “boulevard” and “avenue” imply width and landscaping; “street” is the generic urban term; “road” is the generic connector.