Significant difference in age between two people is normally referred
to as a generation gap.
Actually, there is no such thing as a generation gap; but rather due to
people's disagreements, communication break-down, no respect for each
other, different points of view, dislike for each other etc, all these
could happen to an individual regardless of age, culture, or beliefs.
This is one of human's sicknesses – dislike or hatred. Why not take
a step back, learn to love a little as well as harmonize with others,
what will follow is that such uncomfortable gap or say any hatred should
disappear without trace.