亜成層圏[aseisouken] substratosphere
漢字文化圏[kanjibunkaken] countries which use Chinese characters
岩石圏[gansekiken] lithosphere
気圏[kiken] atmosphere
共栄圏[kyoueiken] co-prosperity sphere

共産圏[kyousanken] communist bloc
極地圏[kyokuchiken] polar regions
圏外[kengai] outside range
圏内[kennai] within the sphere

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

運航[unkou] operating (e.g. ships, aircraft)
えい航[eikou] towing (a ship)
英国航空[eikokukoukuu] British Airways
往航[oukou] outward voyage
廻航[kaikou] navigation

寄航[kikou] stopping at a port
休航[kyuukou] suspension of sailings
近接航空支援[kinsetsukoukuushien] close air support
欠航[kekkou] flight cancellation
航宇[kouu] aerospace

悪路[akuro] bad road
闇路[yamiji] dark road
一日路[ichinichiji] day's journey
一路[ichiro] one road
迂路[uro] detour

沿路[enro] route
遠路[enro] long road
往路[ouro] outward journey
家路[ieji] the road home
回り路[mawarimichi] detour