Hole
noun, suffix
The kanji and the word are exactly the same. That means they share meanings as well.
The reading you learned with the kanji is the same as the reading for this word. No holes in your knowledge!
ポケットに穴があいてる！
There's a hole in my pocket!
そこに穴があるよ。
There's a hole over there.
あ、このバケツ、穴があいてる！
Oh, this bucket has a hole!
あそこのほら穴にはコウモリがいます。
There are bats in that cave over there.
はずかしくて、穴があったら入りたいよ！
I am so embarrassed, I wish I could crawl into a hole!