Correct
两极
/ liǎngjí /
Strokes
Definition
the two poles/the north and south poles/both ends of sth/electric or magnetic poles
Example
As a Noun
two poles of the earth―North Pole and South Pole
As a Noun
two poles (of a magnet or an electric battery)―cathode and anode
As a Noun
two opposing extremes; two polarities