一口商い[hitokuchiakinai] an immediate definite deal
一文商い[ichimonakinai] (a) penny store
卸し商[oroshishou] wholesaler
華商[kashou] Chinese merchants abroad
画商[gashou] picture dealer

会商[kaishou] negotiation
海商法[kaishouhou] maritime law
関連商品[kanrenshouhin] related product
客商売[kyakushoubai] hotel
巨商[kyoshou] wealthy merchant

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

シュタイナー学校[shutainaagakkou] Steiner school
ビジネススクール入学共通試験[bijinesusukuurunyuugakukyoutsuushiken] business school entrance test
ロボット工学[robottokougaku] robotics
位相幾何学[isoukikagaku] topology
易学[ekigaku] study of divination

遺伝学[idengaku] genetics
遺伝子工学[idenshikougaku] genetic engineering
医化学[ikagaku] medical chemistry
医科大学[ikadaigaku] medical school
医学[igaku] medical science

亜科[aka] subfamily
医科[ika] medical science
医科大学[ikadaigaku] medical school
家庭科[kateika] home economics
科名[kamei] family name

科する[kasuru] to inflict
科学[kagaku] science
科学院[kagakuin] science institute
科学技術[kagakugijutsu] science and technology