Title, basically.
Where I live, 'suburbs' = not the city centre, detached/semi-detached houses with back gardens & sometimes small front gardens + 2-3 stories, sometimes terraced housing as well, and alrightish public transport. It's where commuters live who travel half an hour to an hour to get to work.
Any discussion of American suburbs is all about how they push out black folks, are a huge waste of resources, etc. I don't know enough about America to have an opinion but I feel like I'm missing something.
the suburbs in the US are sprawling hellscapes full of cars and chain restaurants. they were originally created in the US as a result of increased car ownership which allowed people to live farther away from their jobs in the cities, and the migration of black people into cities which led to "white flight" from the cities into the suburbs. a lot of middle class professionals still live in the suburbs and commute into nearby cities for work. where I live people sit in traffic for hours just to get to and from work, even though without traffic it's like 20 minute drive. the schools in the suburbs are usually better funded too.
I don't think those same original conditions occurred in Europe, but I've been wondering a lot about suburbs compare in different countries.