=1

虹

hóng

rainbow

=1

虹

hòng

(obsolete on its own in Standard Chinese) to fester only used in 虹洞 to fester

=1

虹

gòng

(historical) a county in modern Anhui, China a county in modern Anhui, China

=2

霓

ní

Japanese cicada old variant of 霓 ní

=2

霓

ní

secondary rainbow