Keyword
empty air
Info
FrequencyTop 100-200
Type
Kyōiku (1st grade) 
?
KankenLevel 10
Heisig1414
Readings
くう
(52%)
そら
(25%)
(8%)
ぞら
(6%)
から
(4%)
(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 (774 in total)
sky; the air; weather; far-off place; distant place; state of mind; feeling
air; atmosphere; mood; situation; someone with no presence; someone who doesn't stand out at all
space; room; airspace
Examples (200 in total)
He was looking at the sky.
He stood looking at the sky.
Without air and water, nothing could live.