both extremities; both ends
Refers to the two opposite ends or extremes of something, often used in abstract contexts like opinions or situations. Compare 両極端.
See also: 両極端
Opinions were split into two extremes.
North and South Poles
Specifically the Earth's North and South Poles. Often used in scientific or geographical contexts.
The ice at both poles is melting.
positive and negative poles
Refers to the positive and negative terminals of a battery or electrical device.
Please check the positive and negative poles of the battery.
Public opinion on this issue is split into two extremes.
That explorer was the first person to explore both Poles.