Japanese edit

For pronunciation and definitions of なんきょく – see the following entries.
南極
[noun] Short for 南極圏. south polar region
[proper noun] (geography) South Pole; Antarctica
難局
[noun] difficult situation / position; jam; strait
(This term, なんきょく, is the hiragana spelling of the above terms.)

(The following entry is uncreated: 難曲.)