system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What are the defining differences between streets, roads, avenues, boulevards, etc.? What dictates how it is designated?
gpt
**A boulevard is two lanes in each direction with a median of trees or greenery running the length of it.**

**An avenue is often two lanes in each direction and in a nicer part of the area.**

**A street can be any number of lanes in each direction, but is generally associated with a town or city or suburb.**

**A road is getting a little more rural, generally one lane in each direction, but not necessarily.**