Boy, girl, man, woman

But in no language are the words for “girl” and “woman” derived from those for “boy” and “man.”

Portuguese: menino - menina, garoto - garota, cachopo - cachopa, rapaz - rapariga - moço - moça
Spanish: niño - niña, nene - nena, chico - chica, muchacho - muchacha, chavo - chava, chaval - chavala, rapaz - rapaza, mozo - moza
Italian: bimbo - bimba, bambino - bambina, monello - monella, fanciullo - fanciulla, ragazzo - ragazza...
Catalan: xiquet - xiqueta, xicot - xicota, al·lot - al·lota, noi - noia, nen - nena
Latin: puellus - puella
Czech: holec/hoch - holka