傾覆[keifuku] turning upside down
修覆[shufuku] restoration
上覆[uwaooi] cover
顛覆[tenpuku] capsizing
同語反覆[dougohanpuku] tautology

被覆[hifuku] coating
覆い[ooi] cover
覆す[kutsugaesu] to overturn
覆る[kutsugaeru] to topple over
覆水盆に帰らず[fukusuibonnikaerazu] what's done is done (lit: spilt water won't go back into its tray)