It is said that the income gap is widening in Japan.
The educational disparity between urban and rural areas has become a problem.
The income gap between cities and rural areas is widening.
The wage gap between men and women has gradually narrowed.
The government is advancing policies to bridge the education gap.
To eliminate the digital divide, internet infrastructure is being developed in rural areas too.
格差 specifically refers to a gap or disparity, often economic or social, while 凸凹 more broadly describes any kind of uneven imbalance in amounts or quality.
格差 highlights an inequality in rank, income, or status, while 落差 can describe any kind of striking gap, including a physical drop.
格差 emphasizes a measurable gap or disparity (e.g. income gap), while 不均衡 stresses the overall lack of proportion or equilibrium between things.
information gap; digital divide
income gap; income divide