Part I of the family vocab series is here.
“Child” can either be translated as çocuk (more common and more Turkish, plural çocuklar) or evlat (from the Arabic awlād, less common). A baby or infant is bebek (plural bebekler).
You may also hear çocuk used specifically as “son,” but more common is oğul (plural oğullar).
“Daughter” is usually kız (plural kızlar), although kız evlât (“girl child”) may be used to specify “daughter,” since kız by itself can also just mean “girl.”
Turkish Word a Day 