児 (newborn babe, child, young of animals)

これは児童じどう図書としょです。

This is a children's book.

幼児ようじは入場にゅうじょう無料むりょうです。

There's no admission fee for small children.

彼女かのじょは育児いくじで忙いそがしいよ。

She is busy taking care of her children.