Check common columns in two tables in PostgreSQL

query.sql

with a as (
  SELECT column_name
  FROM information_schema.columns
  WHERE table_name   = 'world_borders'
),

b as (
  SELECT column_name
  FROM information_schema.columns
  WHERE table_name   = 'populated_places'
)

select a.column_name, b.column_name as other from a, b
where a.column_name = b.column_name