social inequality
US /ˌsoʊʃl ɪnɪˈkwɑːləti/
UK /ˌsoʊʃl ɪnɪˈkwɑːləti/

1.
the existence of unequal opportunities and rewards for different social positions or statuses within a group or society
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The report highlighted the growing problem of social inequality in urban areas.
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Addressing social inequality requires comprehensive policy changes.