斯う[kou] in this way (used for something or someone close to the speaker, including the speaker himself, or for the opinions of the speaker)
斯う言う[kouiu] such
越幾斯[ekisu] extract (esp. of food, fruit, etc.)
瓦斯[gasu] gas
窒扶斯[chifusu] typhoid fever

斯くて[kakute] thus
螽斯[kirigirisu] Japanese katydid (Gampsocleis buergeri)
斯の[kono] this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)
愛斯蘭[aisurando] Iceland
然う斯う[soukou] this and that

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