墓穴【ぼけつ】
grave (pit)
穴埋め【あなうめ】
filling (up) a hole, filling in (for a gap, vacancy, etc.), stopgap, filler (e.g. article), making up (for a loss, damage, etc.), covering (a deficit), compensation, cloze deletion (test format)
洞穴【ほらあな】
cave, cavern, den, grotto
落とし穴【おとしあな】
pitfall, trap, pit
風穴【かざあな】
air hole, windhole, ventilator
横穴【よこあな】
cave, tunnel, tunnel tomb (Kofun period)
抜け穴【ぬけあな】
secret passage, underground passage, loophole, hole one can go through, opening
大穴【おおあな】
large hole, big deficit, heavy losses, long-shot win (in horse racing, etc.), big winnings (on a long shot), a killing (made from a bet)
穴熊【あなぐま】
badger, Eurasian badger (Meles meles), defensive opening for shogi
毛穴【けあな】
pore (of the skin)
穴場【あなば】
good place not many people know about, great little-known spot, good out-of-the-way place, well-kept secret, hidden gem of a place, betting booth (at a racecourse)