Is it okay to give that horse carrots and apples?
My horse has overcome yet another difficulty.
I find it unreasonably funny when old people fall off of horses one after another.
The kanji and the word are exactly the same. That means they share meanings as well.
Since this word is made up of a single kanji, it should use the kun'yomi reading. When learning the kanji, you didn't learn that reading, so here's a mnemonic to help you with this word:
Imagine someone riding a horse. Who is that person? It's Uma (うま) Thurman, the famous actress.