| 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 6
JLPT level N2
936 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 骨 【コツ】 knack, skill, trick, secret, know-how, the ropes, hang, bone, skeleton, cremated remains (esp. the bones), ashes
- 骨髄 【コツズイ】 bone marrow, medulla, heart's core, depths of one's heart, main point, vital part
- 白骨 【ハッコツ】 white (bleached) bone, skeleton
- 鉄骨 【テッコツ】 steel frame, steel beam, steel girder
Kun reading compounds
- 骨 【ほね】 bone, frame, outline, core, backbone, spirit, fortitude, laborious, troublesome, difficult
- 骨抜き 【ほねぬき】 boning (fish or meat), deboning, watering down (a plan, bill, etc.), dilution, emasculation, taking the backbone out of, weakening
- 河骨 【こうほね】 Japanese spatterdock (species of water lily, Nuphar japonica)
- お骨 【おこつ】 cremated remains (esp. the bones), ashes
Readings
- Korean:
- gol
Spanish
- hueso
- esqueleto
Portuguese
- esqueleto
- osso
- permanecer
- moldura
French
- os
- squelette
- restes
- charpente
| 877 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 867 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1081 | A New Dictionary of Kanji Usage |
| 5236 | Classic Nelson (Andrew Nelson) |
| 971 | Essential Kanji (P.G. O’Neill) |
| 1017 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1213 | Japanese Names (P.G. O’Neill) |
| 1266 | Kanji and Kana (Spahn and Hadamitzky) |
| 1340 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1104 | Kanji in Context (Nishiguchi and Kono) |
| 1922 | Kodansha Compact Kanji Guide |
| 3288 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1699 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2310 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1297 | Les Kanjis dans la tete (Yves Maniette) |
| 45098 | Morohashi |
| 2654 | New Japanese English Character Dictionary (Jack Halpern) |
| 6784 | New Nelson (John Haig) |
| 1288 | Remembering The Kanji (James Heisig) |
| 1383 | Remembering The Kanji, 6th edition (James Heisig) |
| 899 | Tuttle Kanji Cards (Alexander Kask) |
| 3646 | 2001 Kanji |
| 4b6.14 | The Kanji Dictionary |
| 2-6-4 | SKIP code |
| 7722.7 | Four corner code |
| 1-25-92 | JIS X 0208-1997 kuten code |
| 9aa8 | Unicode hex code |