(idiomatic) go straight, quit a shady business, wash one's hands of some work or lifestyle which is less than respectable / (idiomatic, neologism) quit a business (regardless of its respectability)

pure white, snow white / pure, unsoiled, clean

oligarchy

an avalanche (large sliding mass of snow and ice), snowslide / an inclination / a collapse, crumbling / a rundown of glaze on a piece of pottery, usually a 茶入れ (chaire, “tea container”)