お大事に[odaijini] take care of yourself
暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
伊勢大神宮[isedaijinguu] the Grand Shrines of Ise
伊勢大廟[isetaibyou] the Grand Shrines of Ise
偉大[idai] greatness

医科大学[ikadaigaku] medical school
医大[idai] medical university
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一大[ichidai] one large ...
一大事[ichidaiji] serious affair

一脈[ichimyaku] (a) vein
冠動脈[kandoumyaku] coronary artery
金脈[kinmyaku] (questionable) financial connections
頸静脈[keijoumyaku] jugular vein
けい動脈[keidoumyaku] carotid artery

鉱脈[koumyaku] vein (of ore)
山脈[sanmyaku] mountain range
支脈[shimyaku] spur
主脈[shumyaku] main mountain range
人脈[jinmyaku] personal connections

安静[ansei] rest
安静時[anseiji] resting
閑静[kansei] quiet (e.g. neighbourhood, neighborhood)
頸静脈[keijoumyaku] jugular vein
寝静まる[neshizumaru] to fall asleep

静か[shizuka] quiet
静けさ[shizukesa] stillness
静岡県[shizuokaken] Shizuoka prefecture (Chuubu area)
静穏[seion] serene
静観[seikan] watchful waiting