The kanji and the word are exactly the same. That means they share meanings as well.
This has the same reading as the kanji you learned, meaning you know the reading!
Koichi's radio-controlled helicopter crashed on the ground after hovering in midair.
I like the face Koichi makes when he takes bills out of his pockets and throws them into the air.
That problem is still up in the air and nobody tries to discuss it.