一席[isseki] sitting
運転席[untenseki] driver's seat (in a car)
宴席[enseki] banquet
会席[kaiseki] meeting place
会席膳[kaisekizen] elaborate dinner tray

会席料理[kaisekiryouri] set of dishes served on an individual tray for entertaining guests
外野席[gaiyaseki] outfield bleachers
滑席[kasseki] sliding seat
寄せ席[yoseseki] musical hall
議席[giseki] parliamentary seat

一首[isshu] tanka
鎌首[kamakubi] sickle-shaped neck (e.g. snake, praying mantis)
丸首[marukubi] round-necked (T-shirt)
偽首[nisekubi] falsified severed head
カリ首[karikubi] (something resembling a) goose's neck

がん首[gankubi] head of a pipe, incl. the bowl and stem attachment
機首[kishu] nose (of plane)
襟首[erikubi] nape of neck
元首[genshu] ruler
絞首刑[koushukei] death by hanging