optimism

constructor (person or organization that constructs) / employee of private military company / (programming) Alternative spelling of コンストラクタ (konsutrakuta, “constructor”)

optimistic

bird of paradise (flower)

infrastructure

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

一栄一落: vicissitudes

stylish; fashionable; smart / wit; humor

speech is silver, silence is golden

(religion, Buddhism) Kongo Yasha Myōō, the Japanese name for Vajrayaksa, the Wisdom King of the North, primarily revered in Vajrayana Buddhism, in Japan, China and elsewhere.