crevice, fissure, discord, opportunity, leisure
隙 centers on a narrow opening or gap: a physical crevice or fissure, a break in harmony (discord), or a gap in time that creates opportunity or leisure.
隙 combines ⻖ (mound, hill) with a phonetic component that historically relates to a gap or crack. The exact development of the right side is uncertain, but the overall character expresses a narrow space or fissure.
The left side ⻖ suggests a steep hill or wall, and the right side looks like a small sun 日 peeking through a narrow crack above 小. Imagine a crevice in a cliff where sunlight slips through, creating a moment of leisure or an opportunity.
For ゲキ, picture a gecko squeezing through a narrow crevice in a wall: gecko -> ゲキ, and the gecko finds an opportunity in the gap.
gap; opening; aperture; crevice; crack; chink; space
gap; opening; room; space
gap
vacant space; aperture; gap; opening
draft; draught; cold air entering through the crack of a door or window
synaptic cleft
without any weak spot; watertight (e.g. reasoning); impeccable
caulking; calking
porosity
spare time; spare moment
one must constantly be on one's guard with ...; one cannot be too careful of ...
potential space
time flies; like watching a white horse run by through a gap in the wall (Zhuangzi)
crevice; aperture
slit; interstice; narrow aperture
crack; slit; crevice; crevasse
void ratio
porosity
gap; opening; space
gap; opening; space