the International System of Units

(astronomy) black dwarf

(sumo) yokozuna; denoting either the highest rank in sumo-wrestling or one of the two persons holding it

Nordic countries, a group of countries in northern Europe consisting of Norway, Sweden, Finland, Denmark, Iceland, and their associated territories Greenland, the Faroe Islands, and Åland.

national museum

Korea Standard Time

a type of interstellar cloud that is so dense that it obscures light from background stars; a dark nebula

発展途上国: developing country

A self-service laundry facility: laundromat (US), laundrette (UK)

Clipping of 国際連合安全保障理事会 (Kokusai Rengō Anzen Hoshō Rijikai, “United Nations Security Council”); the UN Security Council