医界[ikai] medical world
医学界[igakukai] medical world
黄金世界[ougonsekai] utopia
下界[gekai] this world
花柳界[karyuukai] red-light district

界隈[kaiwai] neighborhood
界面[kaimen] interface
各界[kakkai] each field
学界[gakkai] academic or scientific world
官界[kankai] bureaucracy

隈無く[kumanaku] all over
界隈[kaiwai] neighborhood
隈隈[kumaguma] nooks
隈取り[kumadori] shading

隈取る[kumadoru] to make up
隈笹[kumazasa] kuma bamboo grass (Sasa veitchii)
隈魚[kumanomi] clownfish (Amphiprioninae spp., esp. the yellowtail clownfish, Amphiprion clarkii)
藍隈[aiguma] indigo blue make-up used in Kabuki