What is the difference between the adoption of laws under the Roman Republic and the Athenian

What is the difference between the adoption of laws under the Roman Republic and the Athenian polis under the Pericles?

The main difference in the adoption of laws in the Athenian Polis and the Roman Republic is that in Athens, laws were adopted in a democratic way – by voting, in which every citizen of the polis could take part. Voting was carried out by throwing white agree and black disagree stones into a large vessel. The decision was taken based on the opinion of the majority. In the Roman Republic, all laws were passed by the Senate, which always consisted only of a small number of privileged citizens, and therefore the laws passed by it cannot be called democratic.