mention a few duties and responsibilities of that second profession mentioned above.
Invested with executive power of the state and headed the government of the Republic.
Roman consul
the consuls were given the civil and military responsibilities (imperium). However, to prevent abuse of the kingly power, the imperium was shared by two consuls, each of whom could veto the other's actions.

The consuls were invested with the executive power of the state and headed the government of the Republic. 
in which country did the battle of cape ecnomus take place? Southern Sicily whom was it fought between? Fleets of Carthage and the Roman Republic. which year did it take place? 256 BC can you mention a few warriors from the first group? Hanno and Hamilcar and can you name a few warriors from the second group mentioned earlier? Marcus Atilius Regulus and Lucius Manlius Vulso Longus. with reference to the second person mentioned who belonged to the second group, can you name some of his professions? Roman patrician and Roman consul
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Roman consul [SEP] Republican duties
In the gradual development of the Roman legal system, however, some important functions were detached from the consulship and assigned to new officers. Thus, in 443 BC, the responsibility to conduct the census was taken from the consuls and given to the censors. The second function taken from the consulship was their judicial power. Their position as chief judges was transferred to the praetors in 366 BC. After this time, the consul would only serve as judges in extraordinary criminal cases and only when called upon by decree of the Senate.