All authoritarian governments are not equally oppressive to their citizens.
have few or no rights.
Syria is a republic under an authoritarian military-dominated regime.
The tyranical rulers throughout history all believed in absolute authoritarian control of their citizens.
Republic under an authoritarianism regime is not a true republic. Instead, it is only a republic for a few select groups of people and not for another group.
Not necessarily, you can have a capitalist economic system under an authoritarian regime as well as under a democratic regime. Some forms of economy, like central planning, occur much more easily under an authoritarian system than a more democratic one, but it is not wholly impossible for a democratic regime to embrace central planning.
A government that does not allow normal citizens to participate
Authoritarian governments have permission to do whatever while the US government have limitations on what they are allowed to do and the citizens make most of the decisions.
Ferdinand marcos
I believe you're looking for the term "Vichy France".
Yes, the word regime is a noun, a singular, common, abstract noun; a word for a government, especially an authoritarian one; a system or planned way of doing things; a word for a thing.
The government is referred to as Big Brother in George Orwell's novel "1984." In the book, Big Brother represents an authoritarian regime that exercises total control over its citizens through surveillance and propaganda.