large bird, wild goose, large, great, powerful, prosperous
鴻 centers on the idea of something large and impressive, originally a large wild goose. The meanings 'great', 'powerful', and 'prosperous' are natural extensions of that imposing size.
鴻 combines 江 (river) and 鳥 (bird), likely a phono-semantic compound where 江 contributes the sound and 鳥 indicates a large water bird. The exact historical development is uncertain.
A large bird (鳥) by the river (江) is a wild goose, and its size makes it great and powerful.
For コウ, imagine a large goose honking a deep 'koh' sound by the river: koh -> コウ, and the goose is great and powerful.
bean goose (Anser fabalis)
only a hero can understand a hero; swallows and sparrows can't understand the aspirations of phoenixes and swans
how can a small bird (a sparrow, a petty person) understand the aspirations of a great bird (a phoenix); only a hero can understand a hero
ephemeral nature of human deeds and events; evanescence of human affairs; leaving no trace; dust in the wind
foundation of a great project; base of a great enterprise
glorious achievement
something extremely light
mansion used by foreign visitors to Japan (Nara to Heian period)
HarmonyOS (Huawei)
wild geese; large geese and small geese
large bird