松毬[matsupokkuri] pinecone
手毬[temari] traditional Japanese handball game
毬投げ[marinage] playing catch
毬果[kyuuka] (pine) cone

毬栗[igaguri] chestnut in its burr
毬栗頭[igaguriatama] close-cropped head
毬藻[marimo] marimo (variety of algae, Cladophora aegagropila)
ゴム毬[gomumari] rubber ball

お生憎様[oainikusama] that's too bad (ironical)
御誕生日おめでとうございます[otanjoubiomedetougozaimasu] Happy Birthday
隣の芝生は青い[tonarinoshibafuhaaoi] the grass is always greener on the other side
生きがいい[ikigaii] fresh (e.g. fish)
コンピューター援用生産[konpyuutaaenyouseisan] computer-aided manufacture

委託生[itakusei] scholarship student sent by government office or business
生す[nasu] to build up
異常発生[ijouhassei] plague
医学生[igakusei] medical student
医学生物学[igakuseibutsugaku] medical biology