Stall speed tells you how slow you can get before you reach critical AOA.
Unfortunately, Slam, it doesn't. Wing loading (so weight an 'G') are factors as well, so the 'stall speed' isn't always the 'stall speed'. Which is why one can stall at 140 kts and not stall at zero kts in the same aeroplane. Which is why it shouldn't be used beyond basic training - it's potentially misleading.
Stall AoA is always stall AoA, however, for any given wing configuration (flap / slat setting).
I was beginning to doubt my own wisdom... Any wing at zero airspeed creates zero lift at any AoA. All other things equal, lift follows airspeed by the second power. I.e. twice the airspeed, four times the lift. All other things equal, mind you.
Quite so (as long as the wing is not stalled and disregarding high lift devices such as flaps and slats), which is why I edited my post on 'what wings know about' to include "as far as stalling is concerned". I made that edit straight away on reading my post and realising the error, before any answering posts had appeared here.