Generally speaking, Baotou (do you mean the dark tip? ) The pen tip is slightly hard, and the stroke thickness changes little, which is more suitable for shorthand.
Pointed pen is slightly more elastic, and the stroke changes little, which is more suitable for calligraphy performance.
However, the size of elasticity should be refined according to the brand and model, because the composition of nib metal is different and cannot be generalized.
Find a pen that suits your weight and body shape ~ don't pursue pens too much.