1.
pole (geographic or magnetic)
One of the two endpoints of an axis, especially the North or South Pole of the Earth, or the positive/negative pole of a magnet or battery.
北極と南極は地球の両極だ。
The North Pole and South Pole are the two poles of the Earth.
磁石にはN極とS極がある。
A magnet has an N pole and an S pole.
電池のプラス極とマイナス極を間違えないでください。
Please don't mix up the positive and negative terminals of the battery.
2.
extreme, height, utmost
The farthest or highest point of something; the ultimate degree. Used in compounds and set phrases to indicate an extreme.
二人の意見は両極端だ。
Their two opinions are at opposite extremes.
退屈の極に達した。
I reached the height of boredom.
彼の行動は極端から極端へと振れる。
His behavior swings from one extreme to another.
USAGE:
As a standalone word, most often used in scientific contexts (geographic/magnetic poles). In the sense of "extreme," it primarily appears in compounds:
- 極端: extreme (adjective)
- 両極端: both extremes
- 北極: North Pole
- 南極: South Pole
- 陽極: positive pole, anode
- 陰極: negative pole, cathode
Note: When read as ごく, it is a prefix meaning "very, extremely" (極少数, a very small number). That is a separate entry.
COMMON COLLOCATIONS:
- N極/S極: N pole / S pole
- 両極: both poles
- 極に達する: to reach the extreme