Hello,
The answer is "an absolute monarchy and an autocracy".
Reason:
These two types of governments share the same characteristic of having only ONE ruler for example a kingdom its ruled by the king. A absolute monarchy is absolute monarch wields unrestricted political power over the sovereign state and its people therefore all the power goes to one person which is the king. A autocracy is like monarchy because a system of government by one person with absolute power (like a king). Therefore the answer is
absolute monarchy and an autocracy!
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit