• 降おりる — to get off (a vehicle), to go down
• 降おろす — to unload, to let off
• 降ふる — to fall (rain, snow)
• 降車こうしゃ — getting off a vehicle
• 降雨こうう — rainfall
• 降格こうかく — demotion
• 以降いこう — after, from now on

降 is often used for going down from a high place (physical or figurative). It appears frequently in transportation (getting off), weather (rainfall), and even social status (降格). The radical 阝 (こざとへん) is associated with hills or mounds — often implying movement or geographical transition.

次つぎの駅えきで 電車でんしゃを 降おります。
I’ll get off the train at the next station.

夕方ゆうがたから 雨あめが 降ふり始はじめた。
It started to rain in the evening.

When used as verbs, 降りる (get off), 降ろす (unload), and 降る (fall) are all read with kun-yomi. In compound nouns like 降雨 (rainfall) or 降格 (demotion), the on-yomi コウ is used.