| 4 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 4 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 26 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 18 | A New Dictionary of Kanji Usage |
| 1025 | Classic Nelson (Andrew Nelson) |
| 6 | Essential Kanji (P.G. O’Neill) |
| 35 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 188 | Japanese Names (P.G. O’Neill) |
| 1.A | Japanese for Busy People |
| 6 | Kanji and Kana (Spahn and Hadamitzky) |
| 6 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 4 | Kanji in Context (Nishiguchi and Kono) |
| 335 | Kodansha Compact Kanji Guide |
| 3778 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1928 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2620 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 4 | Les Kanjis dans la tete (Yves Maniette) |
| 4682 | Morohashi |
| 3044 | New Japanese English Character Dictionary (Jack Halpern) |
| 938 | New Nelson (John Haig) |
| 4 | Remembering The Kanji (James Heisig) |
| 4 | Remembering The Kanji, 6th edition (James Heisig) |
| 114 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 37 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 1
JLPT level N5
47 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 四 【シ】 four, 4
- ４月 【シガツ】 April, fourth month in the lunar calendar
- 十四 【ジュウシ】 fourteen, 14
- 炭素１４ 【タンソジュウシ】 carbon-14
Kun reading compounds
- 四 【し】 four, 4
- 四畳半 【よじょうはん】 four and a half tatami mats, four-and-a-half-mat room, small room esp. for assignations
- 四つ 【よっつ】 four, 4, four years of age, ten o'clock (in the old time system), burakumin, cross grips
- 四つ角 【よつかど】 four corners, crossroads, intersecting street, street corner
- 四つ 【よっつ】 four, 4, four years of age, ten o'clock (in the old time system), burakumin, cross grips
- 四つの自由 【よっつのじゆう】 the Four Freedoms (as defined by Franklin D. Roosevelt: freedom of speech, freedom of worship, freedom from want, freedom from fear)
- 四 【し】 four, 4
- ４０ 【よんじゅう】 forty, 40
- 十四 【じゅうし】 fourteen, 14
- 軽四 【けいよん】 four-wheeled light vehicle
Readings
- Japanese names:
- あ、 つ、 よつ
- Korean:
- sa
Spanish
- cuatro
- 4
Portuguese
- quatro
French
- quatre
| 3675 | 2001 Kanji |
| 3s2.2 | The Kanji Dictionary |
| 3-3-2 | SKIP code |
| 4-5-1 | SKIP code |
| 6021.0 | Four corner code |
| 1-27-45 | JIS X 0208-1997 kuten code |
| 56db | Unicode hex code |
Jōyō kanji, taught in grade 3
JLPT level N2
1180 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 緑色 【ミドリイロ】 green, green color
- 緑化 【リョッカ】 greening (i.e. planting to increase greenery), tree planting, afforestation
- 新緑 【シンリョク】 fresh verdure, new green leaves
- 常緑 【ジョウリョク】 evergreen
- 緑青 【ロクショウ】 verdigris, green rust, copper rust
- 四緑 【シロク】 fourth of nine traditional astrological signs (corresponding to Jupiter and south-east)
Kun reading compounds
- 緑 【みどり】 green, greenery, verdure
- 緑色 【みどりいろ】 green, green color
- 黄緑 【きみどり】 pea green, yellow-green
- 青緑 【あおみどり】 blue-green, turquoise, aqua, spirogyra, algae forming pond scum
Readings
- Korean:
- rog
Spanish
- verde
- verdor
Portuguese
- Verde
French
- vert
| 532 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 435 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 412 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1102 | A New Dictionary of Kanji Usage |
| 3564 | Classic Nelson (Andrew Nelson) |
| 876 | Essential Kanji (P.G. O’Neill) |
| 824 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2535 | Japanese Names (P.G. O’Neill) |
| 537 | Kanji and Kana (Spahn and Hadamitzky) |
| 546 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 731 | Kanji in Context (Nishiguchi and Kono) |
| 1546 | Kodansha Compact Kanji Guide |
| 1741 | Kodansha Kanji Dictionary (Jack Halpern) |
| 934 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1259 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1383 | Les Kanjis dans la tete (Yves Maniette) |
| 27541P | Morohashi |
| 1377 | New Japanese English Character Dictionary (Jack Halpern) |
| 4528 | New Nelson (John Haig) |
| 1371 | Remembering The Kanji (James Heisig) |
| 1471 | Remembering The Kanji, 6th edition (James Heisig) |
| 430 | Tuttle Kanji Cards (Alexander Kask) |
| 2742 | 2001 Kanji |
| 6a8.15 | The Kanji Dictionary |
| 1-6-8 | SKIP code |
| 2793.2 | Four corner code |
| 1-46-48 | JIS X 0208-1997 kuten code |
| 7dd1 | Unicode hex code |