a carrying pole, a yoke as used by people for carrying things

observatory (place where celestial bodies are observed)

kaiten sushi, conveyor belt sushi (sushi served on a sushi train)

vicissitudes, the way that the world or a person prospers one day and declines the next

infrastructure

一栄一落: vicissitudes

stylish; fashionable; smart / wit; humor

(chiefly Internet slang) thinking with common sense

Kyūjitai form of 初歩的

(linguistics) diachronic