Well Pedro,
A democracy is where everyone votes on everything and the majority wins. There are no presidents, for example, in a democracy.
A republic is where representatives are chosen by the public to make all the “democratic” decisions.
That’s really the only definition of republican and democrat. The rest is propaganda.
Conservatives, well, conserve. They conserve traditional values like stoning people and raping people, forced marriages, mafias… just all the old shit, they conserve “traditional values”
Liberals are the permissive party, which doesn’t conserve the traditional values of stoning and raping people. In order to grant freedom, you must allow freedom, of which stoning and raping are not.
Also, liberalism means nothing if it’s species suicide, like destroying the environment, no environment, no liberals! (Duh). So liberals unlike conservatives, are interested in things like air quality, food quality and environmental quality, so that their virus keeps reproducing.
Now, those are the non propoganda definitions.
The best option is a liberal democracy. All progress that’s ever come to this world in terms of quality of life have been through liberal democracy. All of them!
The globe, including the US is at best a conservative republic.
Conservative republics intentionally don’t educate people well, so as to maintain the class that is the representative authority.
Without an educated populace, liberal democracy is impossible.