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

絵に描いた餠[enikaitamochi] pie in the sky
絵描[ekaki] painter
弧を描く[kowoegaku] to draw an arc (e.g. with a compass)
自然描写[shizenbyousha] description of nature
手描[tegaki] handwriting

描き分ける[kakiwakeru] to distinguish in writing
心理描写[shinribyousha] psychological description
人物寸描[jinbutsusunbyou] thumb-nail sketch
素描[sobyou] drawing
点描[tenbyou] dotting

影絵[kagee] shadow picture
下絵[shitae] rough sketch
絵にかいた餅[enikaitamochi] pie in the sky
絵具[enogu] colors
絵画[kaiga] picture

絵巻[emaki] picture scroll
絵巻物[emakimono] picture scroll
絵図[ezu] illustration
絵日記[enikki] diary with illustrations