洪 hóng flood; big; great
Made up of [氵 shuǐ water radical 85, 共 gòng common; general ]Made with 9 strokes.
The water radical gives idea of flood and 'gong' provides rough phonetic as well as 'collective water'
Related characters
Also uses 氵 shuǐ component: 波 bō (wave) 法 fǎ (law) 港 gǎng (harbor) 海 hǎi (sea) 汗 hàn (perspiration) 汉 hàn (chinese) 河 hé (river) 湖 hú (lake) 活 huó (to live) 济 jì (to cross a river) 江 jiāng (river) 津 jīn (ferry crossing) 酒 jiǔ (wine) 满 mǎn (to fill) 没 méi (have not) 泡 pào (bubble) 汽 qì (steam) 浅 qiǎn (shallow) 清 qīng (clear) 涉 shè (to wade) 洗 xǐ (to wash) 演 yǎn (to develop) 渔 yú (fishing) 泽 zé (pool) 治 zhì (to rule) 洲 zhōu (region)
Also uses 共 gòng component: 港 gǎng (harbor) 供 gōng (to provide)
Sounds same
红 hóng (red)People
洪秀全 Hong Xiuquan洪武帝 Emperor Hongwu