The only free and comprehensive online etymological dictionary of the Spanish language
faz f. (Noun) "face"
10th cent. According to Corominas (1991), the spelling of faz was archaic even in the 10th century. Faz was pronounced /(h)adz/. The modernist variant faz /fadz/ was introduced from Latin facies "face," "shape" in the 15th century. Of unknown origin.
Indo-European
Romance
Portuguese face, Galician face, Catalan faç, French face, Italian faccia, Aromanian fatsã, Romanian față, Sardinian fache