Keyword
empty air
Info
FrequencyTop 100-200
Type
Kyōiku (1st grade) 
?
KankenLevel 10
Heisig1414
Readings
くう
(52%)
そら
(25%)
あ
(8%)
ぞら
(5%)
から
(4%)
す
(1%)
Composed of
hole
construction
Mnemonic

If you make a hole during construction it will be filled with empty air.

Used in kanji (5 in total)
refrain
body cavity
boorish
type of harp
???
Used in vocabulary (955 in total)
air; atmosphere; mood; situation; someone with no presence; someone who doesn't stand out at all
sky; the air; weather; far-off place; distant place; state of mind; feeling
space; room; airspace
Examples (200 in total)
In an instant, the atmosphere in the room became gentle.
And then, I look up at the sky again.
It wasn't the kind of atmosphere where you could relax and enjoy a meal, you know.