negative magnetic pole vs south-seeking pole

negative magnetic pole and south-seeking pole both are nouns.

Word	Noun	Adjective	Verb	Adverb
negative magnetic pole	Yes	No	No	No
south-seeking pole	Yes	No	No	No

As nouns, negative magnetic pole and south-seeking pole are synonyms defined as:

negative magnetic pole and south-seeking pole: the pole of a magnet that points toward the south when the magnet is suspended freely

Other synonyms of negative magnetic pole include negative pole.

negative magnetic pole (noun)	south-seeking pole (noun)
the pole of a magnet that points toward the south when the magnet is suspended freely	the pole of a magnet that points toward the south when the magnet is suspended freely