共同cooperation同一identity同時simultaneous(ly)同様identical同僚coworker合同combination同格the same rank一同all present混同confusion同the same同意agreement同感agreement同級the same grade同居living together同士fellow同志same mind同情sympathy同調sympathy同等equality同封enclosure (e.g. in a letter)同盟alliance
時 じ
時間Time時代era一時moment時期time時刻instant当時at that time同時simultaneous(ly)時間割timetable時速speed (per hour)日時date and time臨時temporary時刻表table時差time difference