A social system; regime.

certain, inevitable, necessary

system; institution

happen / occur

social

certainty, inevitability, necessity

certain, inevitable, necessary

change in society, climate, or condition, transformation, variety / variation / declension / (sumo) a step to one side during the tachiai, the initial charge at the start of a sumo match; a sidestep

to change, to vary

goblin, ghost; an apparition