common

コウ//    あな/ana/KOU/コウ/    ana/あな/

cavity;  hole;  slit;  very;  great;  exceedingly

Radical: (child).   Strokes: 4画.   Elements: 乙子.   Variants: .   Pinyin: kǒng.   Hangul:  [gong].   Nanori: のりnori.

Jōyō Kanji High School.   JLPT N1.

Example compounds:
コウどうこうdōkō】pupil; pupillary
こうしkōshi】Confucius
きこうkikō】pore; stoma; stigma; vesicle
あなanaけあなkeana】pores (of the skin)
あなana】hole; deficit; vacancy; flaw; profitable place (or item, etc.) not well known by others; upset victory (with a large payoff); pit (of a theater); hiding place; underbelly (of society, etc.)
針のはりのあなharinoana】eye of a needle
Codepoints and classification codes:
5b54Unicode
25-6JIS X 0208
1-3-1SKIP
2c1.1TKD
1241.0Four Corner
3556De Roo
Dictionary indices:
1265Classic Nelson
1282The New Nelson Character Dictionary by A. Nelson
179New Japanese-English Character Dictionary by J. Halpern
131Kanji Learner's Dictionary by J. Halpern
96Remembering the Kanji by J. Heisig
1755A New Dictionary of Kanji Usage (Gakken)
58Japanese Names by P.G. O'Neill
1336Essential Kanji by P.G. O'Neill
6933Daikanwajiten 「大漢和辞典」 by T. Morohashi vol. 3 p. 801
1241A Guide to Remembering Japanese Characters by K.G. Henshall
940Kanji & Kana by Spahn and Hadamitzky
1203Kanji Flashcards by M. Hodges and T. Okazaki
1028Tuttle Kanji Cards by A. Kask
1881Kanji in Context by Nishiguchi and Kono
456Kodansha Compact Kanji Guide
97Y. Maniette's French adaptation of Heisig