一円[ichien] one yen
一円玉[ichiendama] one-yen coin
一円札[ichiensatsu] one-yen bill
円か[madoka] round
円やか[maroyaka] round

円グラフ[engurafu] pie graph
円安[enyasu] cheap yen
円為替[engawase] yen exchange
円域[eniki] yen bloc

円窓[marumado] round window
格子窓[koushimado] latticed window
丸窓[marumado] circular window
車窓[shasou] train window
出窓[demado] bay window

切り窓[kirimado] windows cut out of a wall
窓ごし[madogoshi] viewing through a window
窓口[madoguchi] ticket window
窓際[madogiwa] (at the) window