the.com/peripheral
The supporting cast of relevance, hovering near the point without ever being it.
means Something on the edge or outer boundary of a thing, secondary in importance rather than central.
from From Greek peripherein, to carry around, via periphery, the line running the circumference of a circle.
Eye anatomyPeripheral vision detects motion better than detail.
Tech meaningKeyboards and mice are computer peripherals.
Nervous systemPeripheral nerves branch beyond brain and spine.