| 373 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 476 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 453 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 101 | A New Dictionary of Kanji Usage |
| 2379 | Classic Nelson (Andrew Nelson) |
| 415 | Essential Kanji (P.G. O’Neill) |
| 646 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2869 | Japanese Names (P.G. O’Neill) |
| 528 | Kanji and Kana (Spahn and Hadamitzky) |
| 537 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 334 | Kanji in Context (Nishiguchi and Kono) |
| 1115 | Kodansha Compact Kanji Guide |
| 1365 | Kodansha Kanji Dictionary (Jack Halpern) |
| 736 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 989 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1394 | Les Kanjis dans la tete (Yves Maniette) |
| 15561 | Morohashi |
| 1076 | New Japanese English Character Dictionary (Jack Halpern) |
| 2880 | New Nelson (John Haig) |
| 1382 | Remembering The Kanji (James Heisig) |
| 1482 | Remembering The Kanji, 6th edition (James Heisig) |
| 158 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 631 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 4
JLPT level N3
127 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 機 【キ】 chance, opportunity, machine, aircraft, counter for aircraft, counter for (remaining) lives
- 機運 【キウン】 opportunity, chance, good time (to do), trend, tendency, momentum
- 端末機 【タンマツキ】 terminal (unit)
- 有機 【ユウキ】 organic
Kun reading compounds
- 機 【はた】 loom
- 機織り 【はたおり】 weaving, weaver
- 高機 【たかばた】 traditional Japanese treadle-operated tall loom
Readings
- Korean:
- gi
Spanish
- mecanismo
- máquina
- avión
- ocasión
- telar
Portuguese
- mecanismo
- oportunidade
- ocasião
- máquina
- avião
French
- métier à tisser
- mécanique
- opportunité
- machine
- avion
- organique
| 1859 | 2001 Kanji |
| 4a12.1 | The Kanji Dictionary |
| 1-4-12 | SKIP code |
| 4295.3 | Four corner code |
| 1-21-01 | JIS X 0208-1997 kuten code |
| 6a5f | Unicode hex code |
Jōyō kanji, taught in grade 4
JLPT level N1
339 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 井 【セイ】 well curb, Chinese "Well" constellation (one of the 28 mansions)
- 整然 【セイゼン】 orderly, regular, systematic, well-organized, well-organised, trim, tidy, accurate
- 市井 【シセイ】 the street, the town
- 整々 【セイセイ】 well-ordered, in good order, orderly
Kun reading compounds
- 井 【い】 well
- 堰 【せき】 dam, weir, barrier, sluice
- 筒井 【つつい】 round well
- 市井 【しせい】 the street, the town
Readings
- Japanese names:
- いの、 さい、 ひ
- Korean:
- jeong
Spanish
- pozo
- ciudad
Portuguese
- poço
French
- puits
- margelle
- ville
- communauté
| 1470 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 252 | A New Dictionary of Kanji Usage |
| 165 | Classic Nelson (Andrew Nelson) |
| 916 | Essential Kanji (P.G. O’Neill) |
| 1031 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 103 | Japanese Names (P.G. O’Neill) |
| 1193 | Kanji and Kana (Spahn and Hadamitzky) |
| 1255 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1064 | Kanji in Context (Nishiguchi and Kono) |
| 34 | Kodansha Compact Kanji Guide |
| 4265 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2153 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2905 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1824 | Les Kanjis dans la tete (Yves Maniette) |
| 258 | Morohashi |
| 3454 | New Japanese English Character Dictionary (Jack Halpern) |
| 76 | New Nelson (John Haig) |
| 1806 | Remembering The Kanji (James Heisig) |
| 1946 | Remembering The Kanji, 6th edition (James Heisig) |
| 1019 | Tuttle Kanji Cards (Alexander Kask) |
| 1955 | 2001 Kanji |
| 0a4.46 | The Kanji Dictionary |
| 4-4-3 | SKIP code |
| 5500.0 | Four corner code |
| 1-16-70 | JIS X 0208-1997 kuten code |
| 4e95 | Unicode hex code |
Jōyō kanji, taught in junior high
JLPT level N1
1618 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 洞 【ドウ】 sinus, cavity, antrum, neighborhood (administrative division in North Korea)
- 洞察 【ドウサツ】 discernment, insight
- 空洞 【クウドウ】 cavity, hollow, cave, cavern, hollow
- 風洞 【フウドウ】 wind tunnel
Kun reading compounds
- 洞 【ほら】 hollow, cavity, hole, cave
- 洞穴 【ほらあな】 cave, cavern, den, grotto
Readings
- Japanese names:
- とう
- Korean:
- dong, tong
Spanish
- cavidad
- hueco
- excavación
- prever
Portuguese
- gruta
- caverna
- escavação
French
- antre
- grotte
- excavation
| 1661 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1756 | A New Dictionary of Kanji Usage |
| 2546 | Classic Nelson (Andrew Nelson) |
| 1468 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 821 | Japanese Names (P.G. O’Neill) |
| 1301 | Kanji and Kana (Spahn and Hadamitzky) |
| 1380 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1844 | Kanji in Context (Nishiguchi and Kono) |
| 1191 | Kodansha Compact Kanji Guide |
| 455 | Kodansha Kanji Dictionary (Jack Halpern) |
| 280 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 340 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 183 | Les Kanjis dans la tete (Yves Maniette) |
| 17386 | Morohashi |
| 380 | New Japanese English Character Dictionary (Jack Halpern) |
| 3125 | New Nelson (John Haig) |
| 181 | Remembering The Kanji (James Heisig) |
| 193 | Remembering The Kanji, 6th edition (James Heisig) |
| 1276 | Tuttle Kanji Cards (Alexander Kask) |
| 349 | 2001 Kanji |
| 3a6.25 | The Kanji Dictionary |
| 1-3-6 | SKIP code |
| 3712.0 | Four corner code |
| 1-38-22 | JIS X 0208-1997 kuten code |
| 6d1e | Unicode hex code |