The term “Static Stability” refers to the manner in which an aircraft initially responds to changes in its attitude in flight. A highly stable aircraft will have a strong tendency to resist changes in its attitude.
The term “Manoeuvrability” refers to the ability of the pilot to change the attitude of an aircraft in flight. A highly statically stable aircraft will oppose such changes, so in this sense stability and manoeuvrability are opposing qualities. So increasing static stability decreases manoeuvrability.
The term “Manoeuvre Stability” refers to the force that must be applied to the stick to achieve any given change in g loading. An aircraft that is highly manoeuvre-stable, will require large stick forces to achieve large changes in g loading.
The term “stick force stability” refers to the stick forces that are required to achieve any given change in airspeed from a trimmed condition.
The principal factor that determines manoeuvre stability and stick force stability is the longitudinal distance between the Centre of Gravity and the Neutral Point. The Neutral Point is a point on the longitudinal axis of the aircraft. If the aircraft C of G is located on this point then the aircraft will be neutrally stable. In this condition the stick forces required to achieve any change in g load or airspeed is zero.
If the C of G is in front of the Neutral Point then the aircraft will be positively stable. The further forward the C of G the greater will be the manoeuvre stability and the greater will be the stick force stability. If the C of G is located behind the Neutral Point then the aircraft will be unstable. So the stick force stability and the manoeuvre stability are positively affected by forward movement of the Centre of Gravity.
The matter is further complicated by the fact that in pull-up manoeuvres, the downward sweeping motion of the stabiliser increases its angle of attack. This produces a nose down moment which oposes the nose-up pitching motion. This has the effect of temporarily increasing the longitudinal stability of the aircraft. So during such a manoeuvre the C of G could be slightly further aft than the Neutral Point without resulting in neutral stability. This further aft point is called the Manoeuvre Point.