| 65 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 66 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 15 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 233 | A New Dictionary of Kanji Usage |
| 3317 | Classic Nelson (Andrew Nelson) |
| 184 | Essential Kanji (P.G. O’Neill) |
| 77 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 723 | Japanese Names (P.G. O’Neill) |
| 2.17 | Japanese for Busy People |
| 140 | Kanji and Kana (Spahn and Hadamitzky) |
| 140 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 461 | Kanji in Context (Nishiguchi and Kono) |
| 1452 | Kodansha Compact Kanji Guide |
| 2767 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1418 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1913 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1327 | Les Kanjis dans la tete (Yves Maniette) |
| 25415 | Morohashi |
| 2227 | New Japanese English Character Dictionary (Jack Halpern) |
| 4192 | New Nelson (John Haig) |
| 1317 | Remembering The Kanji (James Heisig) |
| 1414 | Remembering The Kanji, 6th edition (James Heisig) |
| 304 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 73 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 1
JLPT level N4
304 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 空 【クウ】 empty air, sky, shunyata (the lack of an immutable intrinsic nature within any phenomenon), emptiness, air force, fruitlessness, meaninglessness, void (one of the five elements), empty (e.g. set)
- 空域 【クウイキ】 airspace
- 領空 【リョウクウ】 territorial airspace
- 防空 【ボウクウ】 air defense, air defence
Kun reading compounds
- 空 【そら】 sky, the air, the heavens, weather, far-off place, distant place, state of mind, feeling, (from) memory, (by) heart, falsehood, lie, somehow, vaguely, fake
- 空模様 【そらもよう】 look of the sky, weather
- 定めなき空 【さだめなきそら】 changeable weather
- 晴れた空 【はれたそら】 clear sky, cloudless sky
- 開く 【あく】 to open (e.g. doors), to open (e.g. business, etc.), to be empty, to be vacant, to be available, to be free, to be open (e.g. neckline, etc.), to have been opened (of one's eyes, mouth, etc.), to come to an end, to open (one's eyes, mouth, etc.), to have a hole, to form a gap, to have an interval (between events)
- 空き 【あき】 space, room, gap, emptiness, vacancy, opening, empty seat, free time, time to spare, disuse, unused thing
- 空き缶 【あきかん】 empty can
- 開ける 【あける】 to open (a door, etc.), to unwrap (e.g. parcel, package), to unlock, to open (for business, etc.), to empty, to remove, to make space, to make room, to move out, to clear out, to be away from (e.g. one's house), to leave (temporarily), to dawn, to grow light, to end (of a period, season), to begin (of the New Year), to leave (one's schedule) open, to make time (for), to make (a hole), to open up (a hole)
- 空 【から】 emptiness, being empty, not carrying anything, unburdened, empty-handed, dishonoured (bill, promise, etc.), false, no-show (reservation), put-on (cheeriness, courage, etc.), empty (compliments), insincere
- 空手 【からて】 karate, being empty-handed, having nothing in one's hands
- もぬけの殻 【もぬけのから】 completely empty (of a residence, etc.), vacant, deserted, body from which the soul has left, corpse, shed skin (of a snake, insect, etc.)
- 空く 【すく】 to become less crowded, to thin out, to get empty, to be hungry
- 空かす 【すかす】 to feel hungry, to get hungry
- 虚しい 【むなしい】 empty, void, vacant, vain, fruitless, futile, ineffective, lifeless
Readings
- Japanese names:
- うつ、 き、 く
- Korean:
- gong
Spanish
- cielo
- atmósfera
- vacío
- vacante
- quedarse vacío
- vaciar
Portuguese
- esvaziar
- ceú
- desocupado
- vazio
- vácuo
French
- vide
- ciel
- vacant
- creux
| 772 | 2001 Kanji |
| 3m5.12 | The Kanji Dictionary |
| 2-3-5 | SKIP code |
| 2-5-3 | SKIP code |
| 3010.1 | Four corner code |
| 1-22-85 | JIS X 0208-1997 kuten code |
| 7a7a | Unicode hex code |
Jinmeiyō kanji, used in names
2189 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 丁 【チョウ】 counter for long and narrow things such as guns, scissors, spades, hoes, inksticks, palanquins, candles, jinrikishas, shamisen, oars
- 丁銀 【チョウギン】 chōgin (Edo-period silver coin shaped like a sea cucumber)
- 一丁 【イッチョウ】 one leaf (of a book bound in Japanese style), one block of tofu, one serving (in a restaurant), one long and narrow thing (e.g. a gun, scissors, spade, hoe, inkstick, palanquin, candle, jinrikisha, shamisen, oar), one chō (unit of distance, approx. 109.09 m), one game, one task, well then, right
- 挺身隊 【テイシンタイ】 volunteer corps
- 挺身 【テイシン】 volunteer, volunteering
- 空挺 【クウテイ】 airborne
Readings
- Korean:
- jeong
Spanish
Portuguese
French
| 1914 | Classic Nelson (Andrew Nelson) |
| 512 | Kodansha Kanji Dictionary (Jack Halpern) |
| 385 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 12106 | Morohashi |
| 428 | New Japanese English Character Dictionary (Jack Halpern) |
| 2164 | New Nelson (John Haig) |
| 2267 | Remembering The Kanji (James Heisig) |
| 2366 | Remembering The Kanji, 6th edition (James Heisig) |
| 3c6.16 | The Kanji Dictionary |
| 1-3-7 | SKIP code |
| 1-3-6 | SKIP code |
| 5204.1 | Four corner code |
| 1-36-82 | JIS X 0208-1997 kuten code |
| 633a | Unicode hex code |
Stroke order
On reading compounds
- 堡塁 【ホウルイ】 fort, fortification, fortress, stronghold
- 堡礁 【ホショウ】 barrier reef
- 空挺堡 【クウテイホ】 airhead
- 橋頭堡 【キョウトウホ】 bridgehead, beachhead
- 堡塁 【ホウルイ】 fort, fortification, fortress, stronghold
- 海堡 【カイホウ】 breakwater, coast battery
- 橋頭堡 【キョウトウホ】 bridgehead, beachhead
Readings
- Korean:
- bo
Spanish
Portuguese
French
| 1107 | Classic Nelson (Andrew Nelson) |
| 3500 | Kodansha Kanji Dictionary (Jack Halpern) |
| 5254 | Morohashi |
| 2821 | New Japanese English Character Dictionary (Jack Halpern) |
| 1050 | New Nelson (John Haig) |
| 3b9.14 | The Kanji Dictionary |
| 2-9-3 | SKIP code |
| 2610.4 | Four corner code |
| 1-52-40 | JIS X 0208-1997 kuten code |
| 5821 | Unicode hex code |