覆う【おおう】
to cover, to hide, to conceal, to wrap, to disguise
覆面【ふくめん】
mask, veil, disguise, anonymous, unmarked, incognito
覆す【くつがえす】
to overturn, to capsize, to upset, to overthrow (government etc.), to reverse (decision etc.), to disprove (an established theory etc.), to overrule
覆る【くつがえる】
to topple over, to be overturned, to capsize, to be overruled, to be reversed, to be discredited
被覆【ひふく】
coating, covering, cover
覆い【おおい】
cover, mantle, shroud, hood