What It Scores
ZA is a valid word in the tournament list this site uses. Tile values only, before any premium square: 11 in Scrabble and 11 in Words With Friends. The letters break down as Z10 A1.
Longer Words Containing ZA
ZA appears inside each of these, which is what makes it worth knowing as a hook.
AFFLUENZAAFFLUENZASALCARRAZAALCARRAZASALCAZARALCAZARSALCORZAALCORZASALIZARIALIZARINALIZARINEALIZARINESALIZARINSALIZARISALTEZAALTEZASALTEZZAALTEZZASAMPERZANDAMPERZANDSANALYZABLEARRHIZALAUTOLYZATEAVIZANDUMAVIZANDUMSAZALEAAZALEASAZANAZANSBAIZABAIZASBALTHAZARBALTHAZARSBALZARINEBALZARINESBANZAIBANZAISBARAZABARAZASBARTIZAN
Next: the Word Unscrambler for any letters at all, and the two and three letter lists. Full entry and definition at Merriam-Webster.