| 1260 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1149 | A New Dictionary of Kanji Usage |
| 3193 | Classic Nelson (Andrew Nelson) |
| 1598 | Essential Kanji (P.G. O’Neill) |
| 766 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1635 | Japanese Names (P.G. O’Neill) |
| 1009 | Kanji and Kana (Spahn and Hadamitzky) |
| 1046 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1309 | Kanji in Context (Nishiguchi and Kono) |
| 1403 | Kodansha Compact Kanji Guide |
| 1518 | Kodansha Kanji Dictionary (Jack Halpern) |
| 802 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1095 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 702 | Les Kanjis dans la tete (Yves Maniette) |
| 24230 | Morohashi |
| 1183 | New Japanese English Character Dictionary (Jack Halpern) |
| 4008 | New Nelson (John Haig) |
| 695 | Remembering The Kanji (James Heisig) |
| 750 | Remembering The Kanji, 6th edition (James Heisig) |
| 1571 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in junior high
JLPT level N2
1101 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 硬 【コウ】 hardness
- 硬貨 【コウカ】 coin, hard currency
- 生硬 【セイコウ】 crude, immature, unpolished
- 重硬 【ジュウコウ】 heavy and hard (of a wood)
Kun reading compounds
- 硬い 【かたい】 hard, solid, tough, stiff, tight, wooden, unpolished (e.g. writing), strong, firm (not viscous or easily moved), safe, steady, honest, steadfast, obstinate, stubborn, bookish, formal, stuffy
- かたいことは言いっこなし 【かたいことはいいっこなし】 let's put formalities aside, let's not speak so stiffly
Readings
- Korean:
- gyeong
Spanish
- rígido
- duro
- firme
Portuguese
- duro
- rígido
French
- dur
- raide
| 3366 | 2001 Kanji |
| 5a7.1 | The Kanji Dictionary |
| 1-5-7 | SKIP code |
| 1164.6 | Four corner code |
| 1-25-37 | JIS X 0208-1997 kuten code |
| 786c | Unicode hex code |
Jōyō kanji, taught in grade 3
JLPT level N3
302 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 球 【キュウ】 sphere, globe, ball, bulb, ball, sphere, counter for pitches
- 球威 【キュウイ】 (pitcher's) stuff
- 配球 【ハイキュウ】 combination of (varied) pitches, serves, etc.
- 制球 【セイキュウ】 (pitcher's) control
Kun reading compounds
- 玉 【たま】 ball, sphere, globe, orb, bead (of sweat, dew, etc.), drop, droplet, ball (in sports), pile (of noodles, etc.), bullet, bulb (i.e. a light bulb), lens (of glasses, etc.), bead (of an abacus), ball (i.e. a testicle), gem, jewel (esp. spherical; sometimes used figuratively), pearl, female entertainer (e.g. a geisha), person (when commenting on their nature), character, item, funds or person used as part of a plot, egg, okonomiyaki, coin, precious, beautiful, excellent
- 玉突き 【たまつき】 billiards, pool, serial collisions (of cars)
- 電気の球 【でんきのたま】 electric (light) bulb
- 目の玉 【めのたま】 eyeball
Readings
- Japanese names:
- く
- Korean:
- gu
Spanish
- pelota
- esfera
Portuguese
- bola
- esfera
French
- balle
- sphère
| 188 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 275 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 257 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 379 | A New Dictionary of Kanji Usage |
| 2941 | Classic Nelson (Andrew Nelson) |
| 845 | Essential Kanji (P.G. O’Neill) |
| 736 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1359 | Japanese Names (P.G. O’Neill) |
| 3.7 | Japanese for Busy People |
| 726 | Kanji and Kana (Spahn and Hadamitzky) |
| 739 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 935 | Kanji in Context (Nishiguchi and Kono) |
| 1319 | Kodansha Compact Kanji Guide |
| 1219 | Kodansha Kanji Dictionary (Jack Halpern) |
| 658 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 880 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 944 | Les Kanjis dans la tete (Yves Maniette) |
| 21011 | Morohashi |
| 969 | New Japanese English Character Dictionary (Jack Halpern) |
| 3643 | New Nelson (John Haig) |
| 935 | Remembering The Kanji (James Heisig) |
| 1005 | Remembering The Kanji, 6th edition (James Heisig) |
| 370 | Tuttle Kanji Cards (Alexander Kask) |
| 3142 | 2001 Kanji |
| 4f7.2 | The Kanji Dictionary |
| 1-4-7 | SKIP code |
| 1313.2 | Four corner code |
| 1-21-69 | JIS X 0208-1997 kuten code |
| 7403 | Unicode hex code |