御古[ofuru] used article (esp. clothes)
手古摺る[tekozuru] to have much trouble
土耳古[toruko] Turkey
下稽古[shitageiko] rehearsal
懐古[kaiko] recalling the old days

擬古[giko] imitation of classical styles
擬古文[gikobun] classical style
稽古[keiko] practice
遠古登点[wokototen] marks to aid in reading Chinese classics
古え[inishie] antiquity

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

井泉[seisen] (water) well
黄泉[kousen] underground spring
温泉[onsen] spa
九泉[kyuusen] hades
源泉[gensen] source

古泉学[kosengaku] numismatics
鉱泉[kousen] mineral spring
泉貨紙[senkashi] reclaimed paper
泉水[sensui] fountain

悪銭[akusen] ill-gotten money
一紙半銭[isshihansen] small sum
金銭[kinsen] money
金銭的ダメージ[kinsentekidameeji] monetary damages
古銭[kosen] old coin

古銭学[kosengaku] numismatics
口銭[kousen] commission
自動金銭出入機[jidoukinsenshutsunyuuki] automatic teller machine
借銭[shakusen] debt
守銭奴[shusendo] miser