I.) Parliamentary
Head of state is mainly ceremonial.
Chief executive can be forced out by "no confidence" vote.
Chief executive is chosen by the legislature.
Head of state has very long or life term of office.
The executive and legislative branches are jointly controlled by a ruling party or coalition.
II.) Presidential
Checks and balances hold between the executive and the legislative branches.
Chief executive is elected by the people.
Head of state is chief executive.