The FWC uses the term Fault as SFCC problem and ECAM asks you to recycle the flap lever which may get rid of it like restarting your mobile. Locked is is a term used for hydraulic wing tip brake activation where the flap/slat is stuck without a remedy.
However in performance page for landing distance etc. there's only one term used for both and that is Fault. It's because if the surface is stuck then performance wise the reason is immaterial. There are no different tables flaps slats locked Vs flaps slats fault. There are four tables given:
1. Flaps fault, it gives performance for various flap stuck positions but slats are free.
2. Slats fault, this gives various slat stuck positions but flaps are free.
3. Flaps and slats both stuck at zero.
4. Flaps and slat both stuck at different combinations of positions