(algebra) descending powers

demotion

to demote

Alternative spelling of 天下り: descent to earth from heaven; an avatar; in Japan's postwar period, the practice of awarding a high-level bureaucrat with a high-paying job after retirement (also spelled 天下り): a kind of revolving door syndrome

calling the spirits of the dead / spiritualism

to call, contact, or communicate with the spirits of the dead, to act as a medium

(ecology) acid rain

gutter, waterspout

a heavy rain that occurs around the fifth lunar month; an early summer rain / (figuratively) that which repeats over and over without lasting long

a Shiratsuyu-class destroyer of the Imperial Japanese Navy during World War II (see Japanese destroyer Samidare (1935) on Wikipedia.Wikipedia) / a place name