(Modern Latin: from Greek, thallos, "a young, or green, twig or shoot" [based on the color of its spectrum]; metal)

(Greek: youth, pubescence, puberty [the period during which the secondary characteristics of maturity begin to develop; by extension, a young man])

(Latin: [diminutive of pupa, a young girl, doll or puppets] the pupil of the eye; including the larva of insects)

(Latin: a marriageable girl, maiden; related to "a young shoot, a twig")