1.
If you say that someone or something has dynamism, you are expressing approval of the fact that they are full of energy or full of new and exciting ideas.
...a situation that calls for dynamism and new thinking.
= energy
N-UNCOUNT [approval]
2.
If you refer to the dynamism of a situation or system, you are referring to the fact that it is changing in an exciting and dramatic way.
Such changes are indicators of economic dynamism.
N-UNCOUNT [approval]