| 854 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 950 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1981 | A New Dictionary of Kanji Usage |
| 32 | Classic Nelson (Andrew Nelson) |
| 723 | Essential Kanji (P.G. O’Neill) |
| 1267 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1030 | Kanji and Kana (Spahn and Hadamitzky) |
| 1070 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1912 | Kanji in Context (Nishiguchi and Kono) |
| 603 | Kodansha Compact Kanji Guide |
| 3961 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2038 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2752 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 361 | Les Kanjis dans la tete (Yves Maniette) |
| 3195 | New Japanese English Character Dictionary (Jack Halpern) |
| 1675 | New Nelson (John Haig) |
| 355 | Remembering The Kanji (James Heisig) |
| 379 | Remembering The Kanji, 6th edition (James Heisig) |
| 1074 | Tuttle Kanji Cards (Alexander Kask) |
Stroke order
On reading compounds
- 二 【ニ】 two, 2
- ２０ 【ニジュウ】 twenty, 20
- 二心 【フタゴコロ】 duplicity, treachery, double-dealing
- 疑弐 【ギジ】 doubt, distrust, disobedience
- 副弐 【フクジ】 secondary (thing), backup
Kun reading compounds
- 弐つ 【ふたつ】 two
Readings
- Korean:
- i
Spanish
- dos (para documentos legales)
Portuguese
- II
- dois
- segundo
French
- deux
- second
| 3056 | 2001 Kanji |
| 4n3.3 | The Kanji Dictionary |
| 3-4-2 | SKIP code |
| 1314.0 | Four corner code |
| 1-38-85 | JIS X 0208-1997 kuten code |
| 5f10 | Unicode hex code |