Three flavours of stall to look at -
(a) 1g certification (AFM/POH data) stall. Probably not of all that much use operationally other than as the basic input to a number of other measurements. Characterised by a gentle approach to the stall and, usually, benign stall characteristics. Stall speed correlates with a repeatable angle of flow incidence to the wing.
(b) accelerated stall - ie not at 1g. Sometimes called a "g-stall". Typical problem with fixed wing real world stalling. Stall speed increases with the square root of the load factor. Similar to variation of stall speed with gross weight changes. Characterised by a more rapid approach to the stall and a higher stalling speed often with undesirable stall characteristics.
(c) accelerated stall - with very high pitch rate. If I recall correctly from a paper on the topic only a consideration with pitch rates in excess of around 70 deg/sec. Leads to the formation of a short lived spanwise vortex above the wing and can see a moderate overshoot of the normal stalling angle. Sometimes a problem with very high performance fixed wing but more a consideration in rotary wing flight. Generally can be ignored by fixed wing pilots.