First is make Laws,second is laws are written and discusses with Congress,third is there are 100 senators and 2 from each state.
First is the president accepts and carries out the laws that is passed by the legislative branch,second is nominates or removes cabinet members and officials,third is arrange treaties and acts of head of state and the leader in chief of the armed forces.
Executive Branch Enforces laws
Judicial Branch Interprets laws
9 Supreme Court Justices
First is the Supreme Court is the head of the Judicial Branch,second is allow whether something under the Constitution is good or bad like fundamental,third is there is nine judges and eight justices and one chief justice.