欠勤届け[kekkintodoke] report of an absence (at work)
欠席届け[kessekitodoke] report of a school absence
行き届く[ikitodoku] to be scrupulous
婚姻届[konintodoke] marriage registration
送り届ける[okuritodokeru] to send to

転入届[tennyuutodoke] notification of moving in
届く[todoku] to reach
届ける[todokeru] to deliver
届け出る[todokederu] to report
届け先[todokesaki] destination

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

ガス欠[gasuketsu] running out of gasoline (petrol)
欠けがえのない[kakegaenonai] irreplaceable
間欠[kanketsu] intermittence
金欠[kinketsu] running out of money
欠かす[kakasu] to miss (doing)

欠く[kaku] to chip
欠け[kake] fragment
欠ける[kakeru] to be chipped
欠員[ketsuin] vacancy
欠課[kekka] cutting class