here are a list of roles <span><span>Summary </span><span>Chief Executive Executes the laws, appoints key federal officials, grants pardons, and reprieves </span><span>Commander in Chief Runs the armed forces</span><span>Chief Diplomat Negotiates with other countries </span><span>Chief Legislator<span>Signs or vetoes legislation, introduces legislation, works with Congress on the budget I hope this helps</span></span></span>
I think they both represent the nation in dealing with government. Head of state is also a chief diplomat in which they do the same thing. Hope Im right!