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

ランゲルハンス島[rangeruhansutou] islets of Langerhans
群島[guntou] island group
孤島[kotou] solitary island
広島県[hiroshimaken] Hiroshima prefecture (Chuugoku area)
鹿児島県[kagoshimaken] Kagoshima prefecture (Kyushu)

諸島[shotou] archipelago
小島[kojima] small island
千島[chishima] Kurile Islands
全島[zentou] the whole island
多島海[tatoukai] archipelago

繭紬[kenchuu] pongee (unbleached silk)
大島紬[ooshimatsumugi] Oshima tsumugi weave

紬糸[tsumugiito] (spun) silk thread
結城紬[yuukitsumugi] silk products produced near Yuuki (using natural indigo dye)