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

枡目[masume] measure
枡席[masuseki] tatami "box seat" for four people at sumo, kabuki, etc.
枡形[masugata] square (shape)
枡酒[masuzake] alcohol (esp. sake) served in a small wooden box

枡売り[masuuri] selling something by the boxful (in a wooden masu box)
斗枡[tomasu] 18-litre measuring container
一斗枡[ittomasu] 18-litre measuring container
枡組み[masugumi] square framing (in a house, temple, screen, etc.)