Answer:
It is the difference between the concentration of power in one person, as opposed to democratic government.
Step-by-step explanation:
The concept of Absolute Monarchy, which in France, was personified by Louis XIV, was a system where all power lay in the hands of the monarch, thus Absolute in the sense of Absolute power. It was linked to the concept of the Divine Right of kings in that this power came directly from God so could not be questioned.
In the USA, you have a democratic system of government, in theory, where people can participate directly and indirectly in the decision-making process, for example through elections and pressure group activity amongst many others.