燕雀[enjaku] small birds
燕青拳[enseiken] Yangqingquan
燕巣[ensou] swift's nest (used to make bird's nest soup)
虎燕拳[koenken] Tiger Swallow Fist
燕支[enji] dark-red pigment

燕麦[enbaku] wild oat (Avena fatua)
飛燕[hien] swallow in flight
海燕[umitsubame] storm petrel (any bird of family Hydrobatidae)
燕千鳥[tsubamechidori] small Indian pratincole (bird) (Glareola lactea)

けつの穴[ketsunoana] anus
横穴[yokoana] cave
下穴[shitaana] pilot hole
穴だらけにする[anadarakenisuru] to fuck

穴凹[anaboko] hole
穴あけ器[anaakeki] (hole) punch
穴居[kekkyo] cave dwelling
穴居人[kekkyojin] cave dweller