降格: to demote

黄昏: dusk / 後昆: posterity

(attributive, computing, typography, of an East Asian character or glyph) the state of being halfwidth which, in early computer encoding, occupies 1 byte, and in modern typography, visually either equals 1 en or proportional

antinuclear

軽犯罪: a minor offense; a misdemeanor

Kyūjitai form of 半径: radius

format, book size / size of a sheet of paper used for ukiyoe

a target, a mark, a bullseye / an objective, an object (of doing something)

計画停電: planned electric power outage

Kyūjitai form of 計画 (“plan”).