凹ます[hekomasu] to dent
凹ませる[hekomaseru] to dent
凹まる[kubomaru] to be low (as a hollow)
凹む[hekomu] to be dented
凹める[kubomeru] to hollow out

凹レンズ[ourenzu] concave lens
凹眼[ougan] cavernous eyes
凹眼鏡[ougankyou] concave glasses
凹型[ougata] concavity

白地[akarasama] plain
アジア太平洋地域[ajiataiheiyouchiiki] Asia-Pacific region
ゼロ地点[zerochiten] ground zero
リーダーシップ的地位[riidaashipputekichii] leadership position
ルーラル地域[ruuraruchiiki] rural area

渥地[akuchi] marshland
安全地帯[anzenchitai] safety zone
意気地[ikuji] self-respect
意気地無し[ikujinashi] coward
意気地のない[ikujinonai] spineless