気軽

きがる

carefree, buoyant, lighthearted, sprightly

気球

ききゅう

balloon, blimp

気軽い

きがるい

cheerful, buoyant, lighthearted

気軽に

きがるに

freely, readily, cheerfully, without any sense of hesitation, without reserve, without treating it as a big deal, casually

熱気球

ねつききゅう

hot-air balloon

気が軽い

きがかるい

light-hearted; carefree

防空気球

ぼうくうききゅう

barrage balloon

阻塞気球

そさいききゅう

barrage balloon

観測気球

かんそくききゅう

weather balloon, sounding balloon

電気の球

でんきのたま

electric (light) bulb

軽い気持ち

かるいきもち

casual, doing something without taking it too seriously

軽

けい

light (e.g. vehicle, aircraft, etc.)

球

きゅう たま

counter for balls

軽質

けいしつ

light (esp. in chemistry)

軽カー

けいカー ケイカー

k-car, kei car, lightweight car with low registration costs

軽水

けいすい

light water

軽トラック

けいトラック

minitruck, light truck, small truck, light pickup

軽目

カルメ かるめ

honeycomb toffee, sponge toffee, foam candy from heated brown sugar mixed with baking soda

軽挙

けいきょ

hasty or rash act