Too much input... *sparks*
1. 海 (Meaning: Sea)
海 (umi) - Sea
海外 (kaigai) - Shore
2. 起 (Meaning: Rise)
起きる (okiru) - To get up
起こる (okoru) - To happen/occur
3. 帰 (Meaning: Return)
帰る (kaeru) - To return home
帰国 (kikoku) - To return to one's country
帰す (kaesu) - To return something to its original place
4. 界 (Meaning: World/Bounds)
世界 (sekai) - The world
業界 (gyoukai) - The business world
他界する (takai suru) - To die
5. 開 (Meaning: Open)
開始 (kaishi) - A beginning
開店する (kaiten suru) - To open a new shop
開く (hiraku) - To open (transitive)
開ける (akeru) - To open (transitive)
開く (aku) - To open (intransitive)
開通 (kaitsuu) - Open to traffic
6. 急 (Meaning: Hurry/sudden)
急ぐ (isogu) - To hurry
急に (kyuu ni) - Suddenly
急行 (kyuukou) - Express train
特急 (tokkyuu) - Super express train
急用 (kyuuyou) - Urgent business
7. 館 (Meaning: Building)
大使館 (taishikan) - Embassy
館長 (kanchou) - Head librarian
映画館 (eigakan) - Movie theatre
旅館 (ryokan) - Japanese inn
8. 楽 (Meaning: Music/Pleasure)
楽しい (tanoshii) - Enjoyable
楽しむ (tanoshimu) - To enjoy
楽屋 (gakuya) - Dressing room
安楽 (anraku) - Comfort/Ease
楽器 (gakki) - Musical instrument
9. 究 (Meaning: Study exhaustively)
学究 (gakkyuu) - Scholar
研究 (kenkyuu) - Research/study
究める (kiwameru) - To study exhaustively
10. 漢 (Meaning: Chinese)
漢字 (kanji) - Kanji (Chinese characters)
漢語 (kango) - Chinese word
漢文 (kanbun) - Chinese writing