"neighbourhood= neighbour=vicinity== must be close, nearby" --> That's why I clarified the meaning of "barrios": they can be near or far, indistinctly.
I found this: https://forum.wordreference.com/threads/surrounding-neighbourhoods-plural.2909922/

neighbourhood= neighbour=vicinity== must be close, nearby

ok, but barrios = neigbourhoods/districts, they can be nearby or not, not only the immediate ones.

neighbourhood usually is used to describe the whole area

neighbourhoods (several ones)