What is the difference between act and commission?

The difference between "act" and "commission" lies in their meanings and contexts. An "act" refers to the execution of a specific action or deed, while "commission" often implies the act of assigning someone to perform a task or the act of carrying out a particular duty. Additionally, "commission" can also refer to the authority granted to someone to undertake a specific role or responsibility. In summary, an act is the action itself, whereas a commission involves the authorization or assignment to perform that action.