| 1888 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1524 | A New Dictionary of Kanji Usage |
| 5049 | Classic Nelson (Andrew Nelson) |
| 1204 | Essential Kanji (P.G. O’Neill) |
| 1889 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2026 | Japanese Names (P.G. O’Neill) |
| 952 | Kanji and Kana (Spahn and Hadamitzky) |
| 982 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 843 | Kanji in Context (Nishiguchi and Kono) |
| 1863 | Kodansha Compact Kanji Guide |
| 3466 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1785 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2432 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 432 | Les Kanjis dans la tete (Yves Maniette) |
| 42245 | Morohashi |
| 2791 | New Japanese English Character Dictionary (Jack Halpern) |
| 6525 | New Nelson (John Haig) |
| 425 | Remembering The Kanji (James Heisig) |
| 454 | Remembering The Kanji, 6th edition (James Heisig) |
| 1685 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in junior high
JLPT level N1
1491 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 雷 【カミナリ】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
- 雷雨 【ライウ】 thunderstorm
- 機雷 【キライ】 (sea) mine
- 界雷 【カイライ】 frontal thunderstorm
Kun reading compounds
- 雷 【かみなり】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
- 雷雲 【らいうん】 thundercloud
- 水雷 【みずがみなり】 thunder accompanied by rain, lightning that does not start a fire
- 日雷 【ひがみなり】 thunder on a clear day, lightning that starts a fire
- 雷 【かみなり】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
- 雷雲 【らいうん】 thundercloud
- 雷 【かみなり】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
Readings
- Korean:
- roe
Spanish
- trueno
- relámpago
- rayo
Portuguese
- trovão
- raio
French
- tonnerre
- foudre
| 3176 | 2001 Kanji |
| 8d5.1 | The Kanji Dictionary |
| 2-8-5 | SKIP code |
| 1060.1 | Four corner code |
| 1060.3 | Four corner code |
| 1-45-75 | JIS X 0208-1997 kuten code |
| 96f7 | Unicode hex code |
Jōyō kanji, taught in grade 2
JLPT level N4
15 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 同 【ドウ】 the same, the said, likewise
- 同意 【ドウイ】 agreement, consent, approval, assent, same opinion, same view, same meaning
- 合同 【ゴウドウ】 combination, union, joining, incorporation, amalgamation, merger, fusion, combined, joint, united, shared, congruence
- 大同 【ダイドウ】 general resemblance, being largely the same, uniting with a common goal, Daidō era (806.5.18-810.9.19)
Kun reading compounds
- 同じ 【おなじ】 same, identical, equal, alike, equivalent, anyway, in any case, if one must ..., if one has to ..., as long as ...
- 同じく 【おなじく】 in the same way, like, likewise, similarly
Readings
- Korean:
- dong
Spanish
- mismo
- igual
- compañero
- idéntico
- similar
Portuguese
- mesmo
- concorda
- igual
French
- identique
- similaire
- égal
| 295 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 204 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 187 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 23 | A New Dictionary of Kanji Usage |
| 619 | Classic Nelson (Andrew Nelson) |
| 185 | Essential Kanji (P.G. O’Neill) |
| 136 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 298 | Japanese Names (P.G. O’Neill) |
| 2.13 | Japanese for Busy People |
| 198 | Kanji and Kana (Spahn and Hadamitzky) |
| 198 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 350 | Kanji in Context (Nishiguchi and Kono) |
| 320 | Kodansha Compact Kanji Guide |
| 3707 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1897 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2578 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 182 | Les Kanjis dans la tete (Yves Maniette) |
| 3294 | Morohashi |
| 2987 | New Japanese English Character Dictionary (Jack Halpern) |
| 717 | New Nelson (John Haig) |
| 180 | Remembering The Kanji (James Heisig) |
| 192 | Remembering The Kanji, 6th edition (James Heisig) |
| 54 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 133 | Tuttle Kanji Cards (Alexander Kask) |
| 3649 | 2001 Kanji |
| 2r4.2 | The Kanji Dictionary |
| 3-2-4 | SKIP code |
| 7722.0 | Four corner code |
| 1-38-17 | JIS X 0208-1997 kuten code |
| 540c | Unicode hex code |