Answer by Rakshita Nagayach:
RCC buildings have vertically oriented wide beams (called Shear walls) which carry the earthquake loads down to the foundation. Shear buildings have specially designed shear walls provided along both width and length of the building to resist the wind and seismic loads exerted on the building. Shear walls provide large strength and stiffness to buildings in the direction of their orientation, which significantly reduces lateral sway of the building and thereby reduces damage to structure and its contents.
About the shear dominance, I believe‘s answer is a perfect explanation.