empty / air / sky / in vain

= + : Mnemonic symbol: an air conditioner

= + : In front of the engine, Karl Koala found some very special cave paintings. Using steel beams he constructs a protective cover. He also installs air conditioning to make the best environment possible to preserve the cave paintings.
to empty / vacant / unoccupied / space / leisure / free time

空 character breakdown

work / worker / skill / profession / trade / craft / labor

= + : Mnemonic symbol: a steel beam, since 工 looks like the cross section of a steel beam. In front of the engine ((e)ng1), Gitta Giraffe (gu) is doing some hard work: She's stacking a capacitor (二) on a dinosaur bone (丨) on a capacitor (二). She's not very successful, but then she gets the idea to use steel beams (工) as support.
cave / cavity / hole / acupuncture point / Taiwan pr. [xue4]

= + : Xu Xian presents his newest piece of art: Cave paintings painted on a gigantic eight-ball. Somehow he managed to set it up inside the elevators entrance. For his great artistic achievement, he gained a honorary doctor, and proudly wears his hard earned graduation cap.

Characters with 空 as component

to control / to accuse / to charge / to sue / to invert a container to empty it / (suffix) (slang) buff / enthusiast / devotee / -phile or -philia

= + : Karl Koala (ku) cannot find the air conditioner's (空) remote control (控) in the engine's bathroom ((e)ng4; he's sitting on it). He doesn't want to get up from the sofa either, so he switches the aircon on using a long toy claw (扌).
(bound form) cavity / tune / accent (in one's speech) / (old) (classifier for carcasses of slaughtered livestock)
cavity of body / barrel (e.g. engine cylinder) / compartment / tune / accent of speech

= + : In front of the anglepod (ang1) the Queen of Hearts (qi) helps the moon (月) to install air conditioning (空) so that his cavity (腔) is always at the right temperature.
name of a mountain
name invented for herself by Tang empress Wu Zetian 武則天|武则天[Wu3 Ze2 tian1]
ancient harp / cf 箜篌, Chinese harp
angry appearance (archaic)
see 焢肉[kong4 rou4]
ignorant / blank-minded
urgent / pressed

Words with 空

overhead / in the sky
all one's hopes and efforts come to nothing / futile
to sweep clean / to clean out
a worthless piece of paper (idiom)
leaving none left / (sold etc) out

Sentences with 空

qǐ
zòu
wàn
suì
 
 
ji̅n
yǒu
ya̅o
hóu
su̅n
wù
ko̅ng