bambino

cherub

foundling, nursling, suckling

preemie (also premie)

papoose

bantling, kid, kiddie (also kiddy), kiddo, moppet, toddler, tot, tyke (also tike)

boy, nipper, tad

juvenile, minor, youngling, youngster, youth

brat, imp, squirt, urchin, whippersnapper

girl, hoyden, tomboy

adolescent, minor

kindergartner (also kindergartener), preschooler, rug rat [slang], schoolboy, schoolchild, schoolgirl, schoolkid

babe, baby, bantling, infant, neonate, nestling, newborn, toddler, tot, tyke (also tike), weanling

brat, devil, hellion, imp, monkey, rapscallion, rascal, rogue, urchin, whippersnapper

cherub

preteen, preteen-ager, subteen, teen, teenager, teener, teenybopper, tween

lad, nipper, shaver, stripling, tad

bobby-soxer, hoyden, tomboy